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<!--Created on: 8/5/2026 5:52:00 PM-->
<!--Modified on: 8/5/2026 5:52:00 PM-->
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTradeReceivables" xlink:to="ifrs-full_CurrentTradeReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current trade receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentContractAssets" xlink:label="ifrs-full_CurrentContractAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentContractAssets" xlink:to="ifrs-full_CurrentContractAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current contract assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherReceivables" xlink:label="ifrs-full_OtherReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherReceivables" xlink:to="ifrs-full_OtherReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentAssets" xlink:label="ifrs-full_OtherCurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentAssets" xlink:to="ifrs-full_OtherCurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherCurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentFinancialAssets" xlink:label="ifrs-full_CurrentFinancialAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentFinancialAssets" xlink:to="ifrs-full_CurrentFinancialAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_CurrentFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashAndCashEquivalents" xlink:to="ifrs-full_CashAndCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents at June 30</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents at January 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentAssets" xlink:to="ifrs-full_CurrentAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CurrentAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Assets" xlink:to="ifrs-full_Assets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Assets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAndLiabilitiesAbstract" xlink:label="ifrs-full_EquityAndLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EquityAndLiabilitiesAbstract" xlink:to="ifrs-full_EquityAndLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EquityAndLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity and liabilities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EquityAndLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EQUITY AND LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CapitalAndReservesAbstract" xlink:label="nyxh_CapitalAndReservesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CapitalAndReservesAbstract" xlink:to="nyxh_CapitalAndReservesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CapitalAndReservesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capital And Reserves [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CapitalAndReservesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital and reserves</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IssuedCapital" xlink:to="ifrs-full_IssuedCapital_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IssuedCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issued capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IssuedCapital_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SharePremium" xlink:label="ifrs-full_SharePremium" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SharePremium" xlink:to="ifrs-full_SharePremium_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SharePremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SharePremium_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPayments" xlink:label="ifrs-full_ReserveOfSharebasedPayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReserveOfSharebasedPayments" xlink:to="ifrs-full_ReserveOfSharebasedPayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReserveOfSharebasedPayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserve of sharebased payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfSharebasedPayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment reserve</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:to="ifrs-full_AccumulatedOtherComprehensiveIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other comprehensive income at June 30,</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Opening value at January 1,</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarnings" xlink:label="ifrs-full_RetainedEarnings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RetainedEarnings" xlink:to="ifrs-full_RetainedEarnings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RetainedEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained earnings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_RetainedEarnings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EquityAttributableToOwnersOfParent" xlink:to="ifrs-full_EquityAttributableToOwnersOfParent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity attributable to owners of parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity attributable to owners of parents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total equity attributable to shareholders</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilitiesAbstract" xlink:label="ifrs-full_LiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LiabilitiesAbstract" xlink:to="ifrs-full_LiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">LIABILITIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilitiesAbstract" xlink:label="ifrs-full_NoncurrentLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentLiabilitiesAbstract" xlink:to="ifrs-full_NoncurrentLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentFinancialLiabilities" xlink:label="ifrs-full_NoncurrentFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentFinancialLiabilities" xlink:to="ifrs-full_NoncurrentFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non current financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NoncurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities" xlink:label="ifrs-full_NoncurrentLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentLeaseLiabilities" xlink:to="ifrs-full_NoncurrentLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentProvisions" xlink:label="ifrs-full_NoncurrentProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentProvisions" xlink:to="ifrs-full_NoncurrentProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DeferredTaxLiabilities" xlink:to="ifrs-full_DeferredTaxLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DeferredTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DeferredTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentContractLiabilities" xlink:label="ifrs-full_NoncurrentContractLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentContractLiabilities" xlink:to="ifrs-full_NoncurrentContractLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current contract liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NoncurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current contract liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities" xlink:label="ifrs-full_NoncurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentLiabilities" xlink:to="ifrs-full_NoncurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_NoncurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total non-current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilitiesAbstract" xlink:label="ifrs-full_CurrentLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentLiabilitiesAbstract" xlink:to="ifrs-full_CurrentLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentFinancialLiabilities" xlink:label="ifrs-full_CurrentFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentFinancialLiabilities" xlink:to="ifrs-full_CurrentFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_CurrentFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities" xlink:label="ifrs-full_CurrentLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentLeaseLiabilities" xlink:to="ifrs-full_CurrentLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Lease liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers" xlink:to="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade and other current payables to trade suppliers</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total trade payables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:to="ifrs-full_CurrentTaxLiabilitiesCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax liabilities, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentTaxLiabilitiesCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentContractLiabilities" xlink:label="ifrs-full_CurrentContractLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentContractLiabilities" xlink:to="ifrs-full_CurrentContractLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current contract liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentContractLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentPayables" xlink:label="ifrs-full_OtherCurrentPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentPayables" xlink:to="ifrs-full_OtherCurrentPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherCurrentPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total other liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities" xlink:label="ifrs-full_CurrentLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentLiabilities" xlink:to="ifrs-full_CurrentLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CurrentLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total current liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Liabilities" xlink:to="ifrs-full_Liabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_Liabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EquityAndLiabilities" xlink:to="ifrs-full_EquityAndLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EquityAndLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity and liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_EquityAndLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total equity and liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfComprehensiveIncomeAbstract" xlink:label="ifrs-full_StatementOfComprehensiveIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_StatementOfComprehensiveIncomeAbstract" xlink:to="ifrs-full_StatementOfComprehensiveIncomeAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfComprehensiveIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">INTERIM CONSOLIDATED STATEMENTS OF LOSS AND OTHER COMPREHENSIVE LOSS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromSaleOfGoods" xlink:label="ifrs-full_RevenueFromSaleOfGoods" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RevenueFromSaleOfGoods" xlink:to="ifrs-full_RevenueFromSaleOfGoods_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RevenueFromSaleOfGoods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue from sale of goods</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RevenueFromSaleOfGoods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CostOfSales" xlink:label="ifrs-full_CostOfSales" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CostOfSales" xlink:to="ifrs-full_CostOfSales_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CostOfSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cost of sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_CostOfSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cost of goods sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CostOfSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total cost of goods sold</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossProfit" xlink:label="ifrs-full_GrossProfit" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GrossProfit" xlink:to="ifrs-full_GrossProfit_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GrossProfit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross profit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_GrossProfit_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross profit</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ResearchAndDevelopmentExpense" xlink:label="ifrs-full_ResearchAndDevelopmentExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ResearchAndDevelopmentExpense" xlink:to="ifrs-full_ResearchAndDevelopmentExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and Development Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total research and development expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="ifrs-full_SellingGeneralAndAdministrativeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, general and administrative expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, General and Administrative Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, general and administrative expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total selling, general and administrative expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherOperatingIncomeExpense" xlink:label="ifrs-full_OtherOperatingIncomeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherOperatingIncomeExpense" xlink:to="ifrs-full_OtherOperatingIncomeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities" xlink:label="ifrs-full_ProfitLossFromOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLossFromOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit loss from continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ProfitLossFromOperatingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating loss for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceIncome" xlink:label="ifrs-full_FinanceIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_FinanceIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total financial income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinanceCosts" xlink:label="ifrs-full_FinanceCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finance costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_FinanceCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total financial expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfitLossBeforeTax" xlink:to="ifrs-full_ProfitLossBeforeTax_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLossBeforeTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit loss before tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProfitLossBeforeTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss before tax for the year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ProfitLossBeforeTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss for the period before taxes</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income tax expense continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total income tax income/(expense)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfitLoss" xlink:to="ifrs-full_ProfitLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss for the period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss for the period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProfitLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss of year attributable to equity holders (in EUR)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Profit loss attributable to owners of parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss attributable to equity holders</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeAbstract" xlink:label="ifrs-full_OtherComprehensiveIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherComprehensiveIncomeAbstract" xlink:to="ifrs-full_OtherComprehensiveIncomeAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherComprehensiveIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherComprehensiveIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive loss</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:label="nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract" xlink:to="nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Items That May Be Subsequently Reclassified To Profit Or Loss (Net Of Tax) [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ItemsThatMayBeSubsequentlyReclassifiedToProfitOrLossNetOfTaxAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Items that may be subsequently reclassified to profit or loss (net of tax)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax" xlink:label="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax" xlink:to="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gains losses on exchange differences on translation net of tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currency translation differences</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComprehensiveIncome" xlink:to="ifrs-full_ComprehensiveIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total comprehensive loss for the year, net of tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total comprehensive loss for the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Comprehensive income attributable to owners of parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss attributable to equity holders</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BasicEarningsLossPerShare" xlink:label="ifrs-full_BasicEarningsLossPerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BasicEarningsLossPerShare" xlink:to="ifrs-full_BasicEarningsLossPerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BasicEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic earnings loss per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BasicEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic earnings per share in EUR (EUR/unit)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_BasicEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basic Loss Per Share (in EUR)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DilutedEarningsLossPerShare" xlink:label="ifrs-full_DilutedEarningsLossPerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DilutedEarningsLossPerShare" xlink:to="ifrs-full_DilutedEarningsLossPerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DilutedEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Diluted earnings loss per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DilutedEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Diluted earnings per share in EUR (EUR/unit)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DilutedEarningsLossPerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Diluted Loss Per Share (in EUR)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfChangesInEquityTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Statement of changes in equity [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfShareCapitalAxis" xlink:label="ifrs-full_ClassesOfShareCapitalAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfShareCapitalAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of share capital [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfShareCapitalDomain" xlink:label="ifrs-full_ClassesOfShareCapitalDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfShareCapitalDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of share capital [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OrdinarySharesMember" xlink:label="ifrs-full_OrdinarySharesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OrdinarySharesMember" xlink:to="ifrs-full_OrdinarySharesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OrdinarySharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common shares [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OrdinarySharesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common shares</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SharePremiumMember" xlink:label="ifrs-full_SharePremiumMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SharePremiumMember" xlink:to="ifrs-full_SharePremiumMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SharePremiumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SharePremiumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfSharebasedPaymentsMember" xlink:label="ifrs-full_ReserveOfSharebasedPaymentsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReserveOfSharebasedPaymentsMember" xlink:to="ifrs-full_ReserveOfSharebasedPaymentsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReserveOfSharebasedPaymentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share based payment reserve [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfSharebasedPaymentsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share based payment reserve</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:to="ifrs-full_AccumulatedOtherComprehensiveIncomeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccumulatedOtherComprehensiveIncomeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsMember" xlink:label="ifrs-full_RetainedEarningsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RetainedEarningsMember" xlink:to="ifrs-full_RetainedEarningsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RetainedEarningsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained loss [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RetainedEarningsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Retained loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="ifrs-full_StatementOfChangesInEquityLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Statement of changes in equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Equity" xlink:to="ifrs-full_Equity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance at end</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_Equity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Balance at beginning</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="ifrs-full_OtherComprehensiveIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherComprehensiveIncome" xlink:to="ifrs-full_OtherComprehensiveIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherComprehensiveIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income/(loss) for the period</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_EquitySettledShareBasedPaymentsAbstract" xlink:label="nyxh_EquitySettledShareBasedPaymentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_EquitySettledShareBasedPaymentsAbstract" xlink:to="nyxh_EquitySettledShareBasedPaymentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_EquitySettledShareBasedPaymentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity-Settled Share-Based Payments [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_EquitySettledShareBasedPaymentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Equity-settled share-based payments</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementIssuedOnGranted" xlink:label="nyxh_ShareBasedPaymentArrangementIssuedOnGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementIssuedOnGranted" xlink:to="nyxh_ShareBasedPaymentArrangementIssuedOnGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementIssuedOnGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The value of share options granted in a share-based payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementIssuedOnGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangement Issued On Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementIssuedOnGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Granted during the period</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments." xlink:label="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments." xlink:to="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in equity resulting from forfeiture of share-based payment transactions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease Through Forfeiture Share Based Payments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseThroughForfeitureShareBasedPayments._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expired during the period</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through share-based payment transactions, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercised during the period</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification" xlink:label="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification" xlink:to="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) through vested restricted stock unit shares-based payments modification</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease Through Vested Restricted Stock Unit Share Based Payments Modification</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseThroughVestedRestrictedStockUnitShareBasedPaymentsModification_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impact modification vested RSUs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xlink:label="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments" xlink:to="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through conversion of convertible instruments, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of shares on conversion of convertible bond</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughConversionOfConvertibleInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of shares on conversion of convertible debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssueOfEquity" xlink:label="ifrs-full_IssueOfEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IssueOfEquity" xlink:to="ifrs-full_IssueOfEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IssueOfEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issue of equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IssueOfEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Issuance of shares for cash</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareIssueRelatedCost" xlink:label="ifrs-full_ShareIssueRelatedCost" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShareIssueRelatedCost" xlink:to="ifrs-full_ShareIssueRelatedCost_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share issue related cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ShareIssueRelatedCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Direct-attributable transaction costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners" xlink:to="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase decrease through transactions with owners</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughTransactionsWithOwners_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total transactions with owners of the company recognized directly in equity</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfCashFlowsAbstract" xlink:label="ifrs-full_StatementOfCashFlowsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_StatementOfCashFlowsAbstract" xlink:to="ifrs-full_StatementOfCashFlowsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from used in operating activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CASH FLOWS FROM OPERATING ACTIVITIES</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_AdjustmentsForAbstract" xlink:label="nyxh_AdjustmentsForAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_AdjustmentsForAbstract" xlink:to="nyxh_AdjustmentsForAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_AdjustmentsForAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_AdjustmentsForAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Adjustments for</label>
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" xlink:label="ifrs-full_IncomeTaxesPaidClassifiedAsOperatingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities" xlink:to="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from sales or maturity of financial instruments, classified as investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from maturity of financial instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from sale of financial assets - current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:label="ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:to="ifrs-full_InterestReceivedClassifiedAsInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestReceivedClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest received, classified as investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestReceivedClassifiedAsInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from used in investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash generated/(used) in investing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from used in financing activities [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">CASH FLOWS FROM FINANCING ACTIVITIES</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments of lease liabilities classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payment of principal portion of lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:to="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from borrowings, classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from other loan</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsForDebtIssueCosts" xlink:label="ifrs-full_PaymentsForDebtIssueCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PaymentsForDebtIssueCosts" xlink:to="ifrs-full_PaymentsForDebtIssueCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PaymentsForDebtIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payments for debt issue costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_PaymentsForDebtIssueCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction costs related to loans and borrowings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestPaidClassifiedAsFinancingActivities" xlink:to="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest paid classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_InterestPaidClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interests paid</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RepaymentOfRecoverableCashAdvance" xlink:label="nyxh_RepaymentOfRecoverableCashAdvance" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RepaymentOfRecoverableCashAdvance" xlink:to="nyxh_RepaymentOfRecoverableCashAdvance_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RepaymentOfRecoverableCashAdvance_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of cash outflow for repayment of recoverable cash advance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RepaymentOfRecoverableCashAdvance_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of recoverable cash advance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_RepaymentOfRecoverableCashAdvance_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Repayment of recoverable cash advance</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromIssuingShares" xlink:label="ifrs-full_ProceedsFromIssuingShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProceedsFromIssuingShares" xlink:to="ifrs-full_ProceedsFromIssuingShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuing shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds from issuance of shares, net of transaction costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ProceedsFromIssuingShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proceeds net of transaction costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities" xlink:to="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other inflows outflows of cash classified as financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other financial costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash flows from used in financing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Net cash generated/(used) from financing activities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase decrease in cash and cash equivalents before effect of exchange rate changes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Movement in cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effect of exchange rate changes on cash and cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effect of exchange rates on cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfGeneralInformationAbstract" xlink:label="nyxh_DisclosureOfGeneralInformationAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfGeneralInformationAbstract" xlink:to="nyxh_DisclosureOfGeneralInformationAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfGeneralInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfGeneralInformationAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General information</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of general information about financial statements [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">General information</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SignificantAccountingPoliciesAbstract" xlink:label="nyxh_SignificantAccountingPoliciesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SignificantAccountingPoliciesAbstract" xlink:to="nyxh_SignificantAccountingPoliciesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SignificantAccountingPoliciesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SignificantAccountingPoliciesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Material accounting policies</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of material accounting policy information [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfMaterialAccountingPolicyInformationExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Material accounting policies</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract" xlink:label="nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract" xlink:to="nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CriticalAccountingEstimatesAndAssumptionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Critical accounting estimates and assumptions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of accounting judgements and estimates [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Critical accounting estimates and assumptions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:to="ifrs-full_DisclosureOfOperatingSegmentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Segment reporting</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:to="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of entity's operating segments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Segment reporting</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFairValueMeasurementAbstract" xlink:label="nyxh_DisclosureOfFairValueMeasurementAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFairValueMeasurementAbstract" xlink:to="nyxh_DisclosureOfFairValueMeasurementAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfFairValueMeasurementAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFairValueMeasurementAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:to="ifrs-full_DisclosureOfFairValueMeasurementExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of fair value measurement [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of subsidiaries [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, Plant and Equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of property plant and equipment [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, Plant and Equipment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of intangible assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PresentationOfLeasesForLesseeAbstract" xlink:label="ifrs-full_PresentationOfLeasesForLesseeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PresentationOfLeasesForLesseeAbstract" xlink:to="ifrs-full_PresentationOfLeasesForLesseeAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PresentationOfLeasesForLesseeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right of use assets and lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfLeasesExplanatory" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfLeasesExplanatory" xlink:to="ifrs-full_DisclosureOfLeasesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of leases [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Right of use assets and lease liabilities</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherLongTermReceivablesAbstract" xlink:label="nyxh_OtherLongTermReceivablesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherLongTermReceivablesAbstract" xlink:to="nyxh_OtherLongTermReceivablesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherLongTermReceivablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other long-term receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherLongTermReceivablesTextBlock" xlink:label="nyxh_OtherLongTermReceivablesTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherLongTermReceivablesTextBlock" xlink:to="nyxh_OtherLongTermReceivablesTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherLongTermReceivablesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Entire disclosure of other long-term receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherLongTermReceivablesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Long Term Receivables [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherLongTermReceivablesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other long-term receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfInventoriesAbstract" xlink:label="nyxh_DisclosureOfInventoriesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfInventoriesAbstract" xlink:to="nyxh_DisclosureOfInventoriesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfInventoriesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfInventoriesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventory</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInventoriesExplanatory" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfInventoriesExplanatory" xlink:to="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of inventories [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventory</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract" xlink:label="nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract" xlink:to="nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TradeReceivablesContractAssetsAndOtherReceivablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables, contract assets and other receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:to="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of trade and other receivables [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables, contract assets and other receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentPrepaymentsAbstract" xlink:label="ifrs-full_CurrentPrepaymentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentPrepaymentsAbstract" xlink:to="ifrs-full_CurrentPrepaymentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentPrepaymentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other current assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherCurrentAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsAbstract" xlink:label="ifrs-full_CashAndCashEquivalentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CashAndCashEquivalentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialAssetsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets.</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Capital, Share Premium, Reserves</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:to="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of share capital, reserves and other equity interest [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Capital, Share Premium, Reserves</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-Based compensation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of share based payment arrangements [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-Based compensation</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFinancialDebtAbstract" xlink:label="nyxh_DisclosureOfFinancialDebtAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFinancialDebtAbstract" xlink:to="nyxh_DisclosureOfFinancialDebtAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFinancialDebtAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDebtSecuritiesExplanatory" xlink:label="ifrs-full_DisclosureOfDebtSecuritiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDebtSecuritiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of debt securities [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDebtSecuritiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Debt</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProvisionsAbstract" xlink:label="ifrs-full_ProvisionsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProvisionsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfProvisionsExplanatory" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentPayablesAbstract" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherCurrentPayablesAbstract" xlink:to="ifrs-full_TradeAndOtherCurrentPayablesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherCurrentPayablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of trade and other payables [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTradeAndOtherPayablesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncomeTaxesAbstract" xlink:label="nyxh_IncomeTaxesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:label="ifrs-full_DisclosureOfIncomeTaxExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfIncomeTaxExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Income taxes and deferred taxes</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfOtherPayablesAbstract" xlink:label="nyxh_DisclosureOfOtherPayablesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfOtherPayablesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other liabilities.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of other liabilities [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency swaps and forwards</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ResultsOfOperationsAbstract" xlink:label="nyxh_ResultsOfOperationsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ResultsOfOperationsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfEmployeeBenefitsExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:to="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of employee benefits [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialIncomeAbstract" xlink:label="nyxh_FinancialIncomeAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialIncomeAbstract" xlink:to="nyxh_FinancialIncomeAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialIncomeAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:to="ifrs-full_DisclosureOfFinanceIncomeExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of finance income [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial income</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialExpenseAbstract" xlink:label="nyxh_FinancialExpenseAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialExpenseAbstract" xlink:to="nyxh_FinancialExpenseAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinanceCostExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceCostExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinanceCostExplanatory" xlink:to="ifrs-full_DisclosureOfFinanceCostExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinanceCostExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of finance cost [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinanceCostExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EarningsPerShareAbstract" xlink:label="ifrs-full_EarningsPerShareAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EarningsPerShareAbstract" xlink:to="ifrs-full_EarningsPerShareAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EarningsPerShareAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss per share (EPS)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:to="ifrs-full_DisclosureOfEarningsPerShareExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of loss per share [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss per share (EPS)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CapitalCommitmentsAbstract" xlink:label="ifrs-full_CapitalCommitmentsAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CapitalCommitmentsAbstract" xlink:to="ifrs-full_CapitalCommitmentsAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CapitalCommitmentsAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other commitments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:to="ifrs-full_DisclosureOfCommitmentsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of commitments [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other commitments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related Party Transactions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:to="ifrs-full_DisclosureOfRelatedPartyExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of related party [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related Party Transactions</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_EventsAfterTheBalanceSheetDateAbstract" xlink:label="nyxh_EventsAfterTheBalanceSheetDateAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_EventsAfterTheBalanceSheetDateAbstract" xlink:to="nyxh_EventsAfterTheBalanceSheetDateAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_EventsAfterTheBalanceSheetDateAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Events after the Balance-Sheet Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:to="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of events after reporting period [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Events after the Balance-Sheet Date</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:to="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of basis of preparation of financial statements [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Basis of preparation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:to="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of going concern [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Going concern principle</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xlink:label="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations" xlink:to="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description of initial application of standards or interpretations [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DescriptionOfInitialApplicationOfStandardsOrInterpretations_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">New and amended standards and interpretations applicable</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities." xlink:label="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities." xlink:to="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The disclosure of information about the carrying value and fair value of derivative financial instrument (Financial assets and liabilities).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying Value And Fair Value Of Derivative Financial Assets And Liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CarryingValueAndFairValueOfDerivativeFinancialAssetsAndLiabilities._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of derivative financial liabilities and assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about intangible assets [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of intangible assets</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock" xlink:to="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The disclosure of detailed information about other long term receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Detailed Information About Other Long Term Receivables Explanatory [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherLongTermReceivablesExplanatoryTableTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of other long-term receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about inventories [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutInventoriesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of inventory</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutTradeReceivablesContractAssetsAndOtherReceivablesExplanatoryTableTextBlock" xlink:label="nyxh_DisclosureOfDetailedInformationAboutTradeReceivablesContractAssetsAndOtherReceivablesExplanatoryTableTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasExplanatory" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of geographical areas [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfGeographicalAreasExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of sales based on country of customer</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about cost of goods sold.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about cost of goods sold [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutCostOfGoodsSoldExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information about cost of goods sold</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about operating expenses [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information about operating expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about research and development expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about research and development expenses [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutResearchAndDevelopmentExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information about research and development expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesTextBlock" xlink:label="nyxh_DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about selling, general and administrative expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about selling, general and administrative expenses [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutSellingGeneralAndAdministrativeExpensesTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of detailed information about selling, general and administrative expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about other operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about other operating expenses [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutOtherOperatingExpensesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of detailed information about other operating income</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about employee benefits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about employee benefits [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information about employee benefits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsByExpenseExplanatoryTextBlock" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsByExpenseExplanatoryTextBlock" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsByExpenseExplanatoryTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about employee benefits by expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsByExpenseExplanatoryTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure Of Detailed Information About Employee Benefits By Expense Explanatory [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEmployeeBenefitsByExpenseExplanatoryTextBlock_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of information about employee benefits by expense</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about finance income.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about finance income [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceIncomeExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of financial income</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutFinanceExpenseExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceExpenseExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceExpenseExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tabular disclosure of detailed information about finance expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceExpenseExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about finance expense [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutFinanceExpenseExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of financial expense</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutNumberOfSharesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutNumberOfSharesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutNumberOfSharesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of existing preferred shares were converted into common shares and then a share split</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about earnings per share [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutEarningsPerShareExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Schedule of basic and diluted earnings per shares based on weighted average number of shares outstanding after conversion and share split</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about remuneration of key management [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutRemunerationOfKeyManagementExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about remuneration of key management</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory" xlink:label="nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory" xlink:to="nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about transactions with related parties [text block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfDetailedInformationAboutTransactionsWithRelatedPartiesExplanatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about transactions with related parties</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsNumberOfReportableSegments" xlink:label="nyxh_IfrsNumberOfReportableSegments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsNumberOfReportableSegments" xlink:to="nyxh_IfrsNumberOfReportableSegments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsNumberOfReportableSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsNumberOfReportableSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Number of Reportable Segments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsNumberOfReportableSegments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of reportable segments</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFinancialAssetsAndLiabilitiesTable" xlink:label="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesTable" xlink:to="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets and liabilities [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementAxis" xlink:label="ifrs-full_MeasurementAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MeasurementAxis" xlink:to="ifrs-full_MeasurementAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MeasurementAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementDomain" xlink:label="ifrs-full_MeasurementDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_MeasurementDomain" xlink:to="ifrs-full_MeasurementDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_MeasurementDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CarryingValueMember" xlink:label="nyxh_CarryingValueMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CarryingValueMember" xlink:to="nyxh_CarryingValueMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CarryingValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AtFairValueMember" xlink:label="ifrs-full_AtFairValueMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AtFairValueMember" xlink:to="ifrs-full_AtFairValueMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AtFairValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">At fair value [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AtFairValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:to="ifrs-full_LevelsOfFairValueHierarchyAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Levels of fair value hierarchy [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:label="ifrs-full_LevelsOfFairValueHierarchyDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:to="ifrs-full_LevelsOfFairValueHierarchyDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LevelsOfFairValueHierarchyDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Levels of fair value hierarchy [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level1OfFairValueHierarchyMember" xlink:label="ifrs-full_Level1OfFairValueHierarchyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Level1OfFairValueHierarchyMember" xlink:to="ifrs-full_Level1OfFairValueHierarchyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Level1OfFairValueHierarchyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level I</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level2OfFairValueHierarchyMember" xlink:label="ifrs-full_Level2OfFairValueHierarchyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Level2OfFairValueHierarchyMember" xlink:to="ifrs-full_Level2OfFairValueHierarchyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Level2OfFairValueHierarchyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level II</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember" xlink:label="ifrs-full_Level3OfFairValueHierarchyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Level3OfFairValueHierarchyMember" xlink:to="ifrs-full_Level3OfFairValueHierarchyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Level3OfFairValueHierarchyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level III</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_LevelIAndIiiMember" xlink:label="nyxh_LevelIAndIiiMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_LevelIAndIiiMember" xlink:to="nyxh_LevelIAndIiiMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_LevelIAndIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for a category of the fair value hierarchy level I and III</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_LevelIAndIiiMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Level I And III [member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsAxis" xlink:label="ifrs-full_ClassesOfFinancialAssetsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialAssetsAxis" xlink:to="ifrs-full_ClassesOfFinancialAssetsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialAssetsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial assets [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain" xlink:label="ifrs-full_ClassesOfFinancialAssetsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialAssetsDomain" xlink:to="ifrs-full_ClassesOfFinancialAssetsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialAssetsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial assets [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CashGuaranteesMember" xlink:label="nyxh_CashGuaranteesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CashGuaranteesMember" xlink:to="nyxh_CashGuaranteesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CashGuaranteesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for cash guarantees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CashGuaranteesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash Guarantees [member]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PrepaymentOptionMember" xlink:label="nyxh_PrepaymentOptionMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PrepaymentOptionMember" xlink:to="nyxh_PrepaymentOptionMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PrepaymentOptionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to prepayment option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PrepaymentOptionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment Option [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PrepaymentOptionMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment option</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeReceivablesMember" xlink:label="ifrs-full_TradeReceivablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeReceivablesMember" xlink:to="ifrs-full_TradeReceivablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_TradeReceivablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade and other receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ForeignCurrencySwapsAndForwardsMember" xlink:label="nyxh_ForeignCurrencySwapsAndForwardsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ForeignCurrencySwapsAndForwardsMember" xlink:to="nyxh_ForeignCurrencySwapsAndForwardsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ForeignCurrencySwapsAndForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for foreign currency swaps and forwards.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ForeignCurrencySwapsAndForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign Currency Swaps And Forwards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ForeignCurrencySwapsAndForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency swaps and forwards</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherCurrentAssets.Member" xlink:label="nyxh_OtherCurrentAssets.Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherCurrentAssets.Member" xlink:to="nyxh_OtherCurrentAssets.Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherCurrentAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for other current assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherCurrentAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets. [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherCurrentAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current assets</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CashAndCashEquivalent.Member" xlink:label="nyxh_CashAndCashEquivalent.Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CashAndCashEquivalent.Member" xlink:to="nyxh_CashAndCashEquivalent.Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CashAndCashEquivalent.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for cash and cash equivalent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CashAndCashEquivalent.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalent. [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CashAndCashEquivalent.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialAssets.Member" xlink:label="nyxh_FinancialAssets.Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialAssets.Member" xlink:to="nyxh_FinancialAssets.Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for financial assets.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets. [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancialAssets.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:to="ifrs-full_ClassesOfFinancialLiabilitiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial liabilities [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:to="ifrs-full_ClassesOfFinancialLiabilitiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialLiabilitiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial liabilities [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_LoanFacilityAgreementMember" xlink:label="nyxh_LoanFacilityAgreementMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_LoanFacilityAgreementMember" xlink:to="nyxh_LoanFacilityAgreementMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_LoanFacilityAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to loan facility agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_LoanFacilityAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan Facility Agreement [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_LoanFacilityAgreementMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan facility agreement</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SyntheticWarrantMember" xlink:label="nyxh_SyntheticWarrantMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SyntheticWarrantMember" xlink:to="nyxh_SyntheticWarrantMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SyntheticWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to synthetic warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SyntheticWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Synthetic Warrant [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SyntheticWarrantMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Synthetic warrants</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvances.Member" xlink:label="nyxh_RecoverableCashAdvances.Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvances.Member" xlink:to="nyxh_RecoverableCashAdvances.Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvances.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvances.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances. [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashAdvances.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TradeAndOtherPayablesMember" xlink:label="nyxh_TradeAndOtherPayablesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TradeAndOtherPayablesMember" xlink:to="nyxh_TradeAndOtherPayablesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TradeAndOtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for trade and other payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TradeAndOtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade and other liabilities [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TradeAndOtherPayablesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade and other liabilities</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ConvertibleBondsMember" xlink:label="nyxh_ConvertibleBondsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ConvertibleBondsMember" xlink:to="nyxh_ConvertibleBondsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ConvertibleBondsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for convertible bonds.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ConvertibleBondsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Convertible Bonds [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ConvertibleBondsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Convertible bonds</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnobservableInputsAxis" xlink:label="ifrs-full_UnobservableInputsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnobservableInputsAxis" xlink:to="ifrs-full_UnobservableInputsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnobservableInputsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unobservable inputs [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UnobservableInputsDomain" xlink:label="ifrs-full_UnobservableInputsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_UnobservableInputsDomain" xlink:to="ifrs-full_UnobservableInputsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_UnobservableInputsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unobservable inputs [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember" xlink:to="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Historical volatility for shares, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Historical volatility for shares, measurement input</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_HistoricalVolatilityForSharesMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CreditSpreadMeasurementInputMember" xlink:label="ifrs-full_CreditSpreadMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CreditSpreadMeasurementInputMember" xlink:to="ifrs-full_CreditSpreadMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CreditSpreadMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit spread, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CreditSpreadMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Credit spread, measurement input</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesAxis" xlink:label="ifrs-full_ClassesOfLiabilitiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfLiabilitiesAxis" xlink:to="ifrs-full_ClassesOfLiabilitiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfLiabilitiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of liabilities [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfLiabilitiesDomain" xlink:label="ifrs-full_ClassesOfLiabilitiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfLiabilitiesDomain" xlink:to="ifrs-full_ClassesOfLiabilitiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfLiabilitiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of liabilities [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis" xlink:label="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis" xlink:to="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Valuation techniques used in fair value measurement [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain" xlink:label="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain" xlink:to="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ValuationTechniquesUsedInFairValueMeasurementDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Valuation techniques used in fair value measurement [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_BinomialTreeMember" xlink:label="nyxh_BinomialTreeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_BinomialTreeMember" xlink:to="nyxh_BinomialTreeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_BinomialTreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to binomial tree.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_BinomialTreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Binomial Tree [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_BinomialTreeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Binomial Tree</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_LongstaffSchwartzMonteCarloMember" xlink:label="nyxh_LongstaffSchwartzMonteCarloMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_LongstaffSchwartzMonteCarloMember" xlink:to="nyxh_LongstaffSchwartzMonteCarloMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_LongstaffSchwartzMonteCarloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents information pertaining to Longstaff-Schwartz Monte Carlo.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_LongstaffSchwartzMonteCarloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Longstaff-Schwartz Monte Carlo [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_LongstaffSchwartzMonteCarloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Longstaff-Schwartz Monte Carlo</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TrancheAxis" xlink:label="nyxh_TrancheAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TrancheAxis" xlink:to="nyxh_TrancheAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TrancheAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TrancheAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche [Axis]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TrancheDomain" xlink:label="nyxh_TrancheDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TrancheDomain" xlink:to="nyxh_TrancheDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TrancheDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TrancheDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche [Domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FirstTrancheMember" xlink:label="nyxh_FirstTrancheMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FirstTrancheMember" xlink:to="nyxh_FirstTrancheMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This information pertaining to First Tranche Member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First Tranche [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First tranche</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_FirstTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche A</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SecondTrancheMember" xlink:label="nyxh_SecondTrancheMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SecondTrancheMember" xlink:to="nyxh_SecondTrancheMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This information pertaining to Second Tranche Member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Second Tranche [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Second tranche</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_SecondTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tranche B</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems" xlink:label="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems" xlink:to="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets and liabilities [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfFinancialAssetsAndLiabilitiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets and liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssets" xlink:label="ifrs-full_FinancialAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialAssets" xlink:to="ifrs-full_FinancialAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialLiabilitiesAbstract" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialLiabilitiesAbstract" xlink:to="ifrs-full_DisclosureOfFinancialLiabilitiesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities" xlink:label="ifrs-full_FinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilities" xlink:to="ifrs-full_FinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ending balance, ending period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Opening balance, period starting</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_FinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total financial debt</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities" xlink:label="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities" xlink:to="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the duration utilized in determining within valuation model to determine the fair value of liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Duration Utilized In Determining Fair Value Of Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DurationUtilizedInDeterminingFairValueOfLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Duration utilized in determining fair value of liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantUnobservableInputLiabilities" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantUnobservableInputLiabilities" xlink:to="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SignificantUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Significant unobservable input liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities" xlink:label="ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities" xlink:to="ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible increase in unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_PercentageOfReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible increase in unobservable input liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities" xlink:label="ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities" xlink:to="ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible decrease in unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_PercentageOfReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of reasonably possible decrease in unobservable input liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Change in fair value measurement due to reasonably possible increase in unobservable input liabilities.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Changes in fair value measurement due to reasonably possible decrease in unobservable input liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets" xlink:to="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of assets, out of level 1 into level 2</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets" xlink:to="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of assets, out of level 2 into level 1</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities" xlink:to="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfers out of Level 1 into Level 2 of fair value hierarchy, liabilities held at end of reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of liabilities, out of level 1 into level 2</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities" xlink:to="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfers out of Level 2 into Level 1 of fair value hierarchy, liabilities held at end of reporting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transfer of liabilities, out of level 2 into level 1</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of subsidiaries [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:to="ifrs-full_SignificantInvestmentsInSubsidiariesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:to="ifrs-full_SignificantInvestmentsInSubsidiariesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NyxoahLtdMember" xlink:label="nyxh_NyxoahLtdMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NyxoahLtdMember" xlink:to="nyxh_NyxoahLtdMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NyxoahLtdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Nyxoah Ltd.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NyxoahLtdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nyxoah Ltd</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NyxoahPtyLtdMember" xlink:label="nyxh_NyxoahPtyLtdMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NyxoahPtyLtdMember" xlink:to="nyxh_NyxoahPtyLtdMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NyxoahPtyLtdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Nyxoah Pty Ltd.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NyxoahPtyLtdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nyxoah Pty Ltd</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NyxoahIncMember" xlink:label="nyxh_NyxoahIncMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NyxoahIncMember" xlink:to="nyxh_NyxoahIncMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NyxoahIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Nyxoah Inc.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NyxoahIncMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nyxoah Inc</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NyxoahGmbhMember" xlink:label="nyxh_NyxoahGmbhMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NyxoahGmbhMember" xlink:to="nyxh_NyxoahGmbhMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NyxoahGmbhMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for Nyxoah GmbH.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NyxoahGmbhMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nyxoah GmbH [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NyxoahGmbhMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Nyxoah GmbH</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of subsidiaries [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subsidiaries:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:to="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Proportion of ownership interest in subsidiary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProportionOfOwnershipInterestInSubsidiary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of share capital held</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of property, plant and equipment [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:to="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of property, plant and equipment [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:to="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of property, plant and equipment [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ConstructionAndLaboratoryEquipmentMember" xlink:label="nyxh_ConstructionAndLaboratoryEquipmentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ConstructionAndLaboratoryEquipmentMember" xlink:to="nyxh_ConstructionAndLaboratoryEquipmentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ConstructionAndLaboratoryEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">NA</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ConstructionAndLaboratoryEquipmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Construction and laboratory equipment [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying amount accumulated depreciation amortization and impairment and gross carrying amount [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember" xlink:label="ifrs-full_CarryingAmountMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CarryingAmountMember" xlink:to="ifrs-full_CarryingAmountMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Carrying amount member</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember" xlink:label="ifrs-full_GrossCarryingAmountMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GrossCarryingAmountMember" xlink:to="ifrs-full_GrossCarryingAmountMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross Carrying Amount [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gross value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_GrossCarryingAmountMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cost</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedDepreciationAndAmortisationMember" xlink:label="ifrs-full_AccumulatedDepreciationAndAmortisationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AccumulatedDepreciationAndAmortisationMember" xlink:to="ifrs-full_AccumulatedDepreciationAndAmortisationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AccumulatedDepreciationAndAmortisationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accumulated depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AccumulatedDepreciationAndAmortisationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortization</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about property, plant and equipment [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Property, Plant and Equipment:</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment" xlink:to="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions other than through business combinations property plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:label="ifrs-full_DepreciationPropertyPlantAndEquipment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DepreciationPropertyPlantAndEquipment" xlink:to="ifrs-full_DepreciationPropertyPlantAndEquipment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DepreciationPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation property plant and equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DepreciationPropertyPlantAndEquipment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation charge</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity" xlink:label="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity" xlink:to="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs initially funded by entity.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Construction Costs, Initially Funded by Entity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PercentageOfConstructionCostsInitiallyFundedByEntity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs initially funded by entity</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable" xlink:label="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable" xlink:to="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs recognised as unbilled receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Construction Costs, Recognised as Unbilled Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PercentageOfConstructionCostsRecognisedAsUnbilledReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs recognised as unbilled receivable</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PercentageOfConstructionCostsFundedByLessor" xlink:label="nyxh_PercentageOfConstructionCostsFundedByLessor" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PercentageOfConstructionCostsFundedByLessor" xlink:to="nyxh_PercentageOfConstructionCostsFundedByLessor_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PercentageOfConstructionCostsFundedByLessor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs funded by lessor.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PercentageOfConstructionCostsFundedByLessor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of Construction Costs Funded By Lessor</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PercentageOfConstructionCostsFundedByLessor_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of construction costs funded by lessor</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of intangible assets [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:to="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of intangible assets and goodwill [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:to="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of intangible assets and goodwill [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DevelopmentCostMember" xlink:label="nyxh_DevelopmentCostMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DevelopmentCostMember" xlink:to="nyxh_DevelopmentCostMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DevelopmentCostMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Development cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_DevelopmentCostMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Development cost</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PatentsAndLicensesMember" xlink:label="nyxh_PatentsAndLicensesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PatentsAndLicensesMember" xlink:to="nyxh_PatentsAndLicensesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PatentsAndLicensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patents and licenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_PatentsAndLicensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Patents and licenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:to="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of intangible assets [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Intangible assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill" xlink:to="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions other than through business combinations intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill" xlink:to="ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through other changes, intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other movements</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:to="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortisation intangible assets other than goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortisation intangible assets other than goodwill</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NewLeaseAgreements." xlink:label="nyxh_NewLeaseAgreements." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NewLeaseAgreements." xlink:to="nyxh_NewLeaseAgreements._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NewLeaseAgreements._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of new lease agreement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NewLeaseAgreements._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">New Lease Agreements.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PaymentOfTotalLeaseLiability." xlink:label="nyxh_PaymentOfTotalLeaseLiability." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PaymentOfTotalLeaseLiability." xlink:to="nyxh_PaymentOfTotalLeaseLiability._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PaymentOfTotalLeaseLiability._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The cash outflow for payment of total lease liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PaymentOfTotalLeaseLiability._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payment Of Total Lease Liability.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationRightofuseAssets" xlink:label="ifrs-full_DepreciationRightofuseAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DepreciationRightofuseAssets" xlink:to="ifrs-full_DepreciationRightofuseAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DepreciationRightofuseAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation right-of-use assets</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TaxIncentiveReceivable" xlink:label="nyxh_TaxIncentiveReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TaxIncentiveReceivable" xlink:to="nyxh_TaxIncentiveReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TaxIncentiveReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of tax incentive receivable in relation to development activities and Clinical trials.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TaxIncentiveReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Tax Incentive Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_TaxIncentiveReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">R&amp;D tax incentive</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentPrepayments" xlink:label="ifrs-full_NoncurrentPrepayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentPrepayments" xlink:to="ifrs-full_NoncurrentPrepayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentPrepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current prepayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentPrepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment option</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CashGuaranteesNoncurrent" xlink:label="nyxh_CashGuaranteesNoncurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CashGuaranteesNoncurrent" xlink:to="nyxh_CashGuaranteesNoncurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CashGuaranteesNoncurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of non-current cash guarantees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CashGuaranteesNoncurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash Guarantees, Noncurrent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CashGuaranteesNoncurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash guarantees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RawMaterials" xlink:label="ifrs-full_RawMaterials" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RawMaterials" xlink:to="ifrs-full_RawMaterials_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RawMaterials_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current raw materials</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RawMaterials_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Raw materials</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WorkInProgress" xlink:label="ifrs-full_WorkInProgress" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WorkInProgress" xlink:to="ifrs-full_WorkInProgress_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WorkInProgress_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Work in progress</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WorkInProgress_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Work in progress</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinishedGoods" xlink:label="ifrs-full_FinishedGoods" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinishedGoods" xlink:to="ifrs-full_FinishedGoods_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinishedGoods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finished goods</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinishedGoods_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Finished goods</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TradeReceivablesGross" xlink:label="nyxh_TradeReceivablesGross" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TradeReceivablesGross" xlink:to="nyxh_TradeReceivablesGross_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TradeReceivablesGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of trade receivables, including allowance for credit losses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TradeReceivablesGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Receivables, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TradeReceivablesGross_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade receivables</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContractAssets" xlink:label="ifrs-full_ContractAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ContractAssets" xlink:to="ifrs-full_ContractAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract assets</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TradeReceivablesAllowanceForCreditLosses" xlink:label="nyxh_TradeReceivablesAllowanceForCreditLosses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TradeReceivablesAllowanceForCreditLosses" xlink:to="nyxh_TradeReceivablesAllowanceForCreditLosses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TradeReceivablesAllowanceForCreditLosses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of allowance for credit losses on trade receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TradeReceivablesAllowanceForCreditLosses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade Receivables, Allowance for credit Losses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_TradeReceivablesAllowanceForCreditLosses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Allowance for expected credit loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Prepayments" xlink:label="ifrs-full_Prepayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Prepayments" xlink:to="ifrs-full_Prepayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Prepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Prepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advance payments</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia" xlink:label="nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia" xlink:to="nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development incentive receivable Australia</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ResearchAndDevelopmentIncentiveReceivableAustralia_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">R&amp;D incentive receivable (Australia)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ValueAddedTaxReceivables" xlink:label="ifrs-full_ValueAddedTaxReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ValueAddedTaxReceivables" xlink:to="ifrs-full_ValueAddedTaxReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ValueAddedTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Value added tax receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ValueAddedTaxReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">VAT receivable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxAssetsCurrent" xlink:label="ifrs-full_CurrentTaxAssetsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxAssetsCurrent" xlink:to="ifrs-full_CurrentTaxAssetsCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax assets, current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentTaxAssetsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax receivable</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ForeignCurrencySwapsAndForwardReceivable" xlink:label="nyxh_ForeignCurrencySwapsAndForwardReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ForeignCurrencySwapsAndForwardReceivable" xlink:to="nyxh_ForeignCurrencySwapsAndForwardReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ForeignCurrencySwapsAndForwardReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of Foreign currency swaps and forward receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ForeignCurrencySwapsAndForwardReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign Currency Swaps And Forward Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ForeignCurrencySwapsAndForwardReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency swaps and forwards</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables" xlink:label="ifrs-full_OtherCurrentReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherCurrentReceivables" xlink:to="ifrs-full_OtherCurrentReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other current receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherCurrentReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables" xlink:label="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables" xlink:to="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of trade receivables, contract assets and other receivables classified as current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Trade Receivables, Contract Assets And Other Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="nyxh_CurrentTradeReceivablesContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total trade receivables, contract assets and other receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables" xlink:label="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables" xlink:to="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in trade, contract assets, and other receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Trade Contract Assets and Other Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInTradeContractAssetsAndOtherReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in trade receivables, contract assets and other receivables.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInTradeReceivable" xlink:label="nyxh_IncreaseDecreaseInTradeReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInTradeReceivable" xlink:to="nyxh_IncreaseDecreaseInTradeReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInTradeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in Trade receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInTradeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Trade Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInTradeReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in trade receivables.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInOtherReceivables." xlink:label="nyxh_IncreaseDecreaseInOtherReceivables." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInOtherReceivables." xlink:to="nyxh_IncreaseDecreaseInOtherReceivables._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInOtherReceivables._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in other receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInOtherReceivables._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Other Receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInOtherReceivables._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In other receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInPrepayments" xlink:label="nyxh_IncreaseDecreaseInPrepayments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInPrepayments" xlink:to="nyxh_IncreaseDecreaseInPrepayments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInPrepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in prepayments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInPrepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease in Prepayments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInPrepayments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in prepayments</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInCurrentTaxReceivable" xlink:label="nyxh_IncreaseDecreaseInCurrentTaxReceivable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInCurrentTaxReceivable" xlink:to="nyxh_IncreaseDecreaseInCurrentTaxReceivable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInCurrentTaxReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in current tax receivable.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInCurrentTaxReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Current Tax Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInCurrentTaxReceivable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in current tax receivable</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_UnbilledReceivablesIncludedInTradeReceivables" xlink:label="nyxh_UnbilledReceivablesIncludedInTradeReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_UnbilledReceivablesIncludedInTradeReceivables" xlink:to="nyxh_UnbilledReceivablesIncludedInTradeReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_UnbilledReceivablesIncludedInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of unbilled receivables included in trade receivables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_UnbilledReceivablesIncludedInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unbilled Receivables Included in Trade Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_UnbilledReceivablesIncludedInTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unbilled receivables included in trade receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CurrentDeferredCharges" xlink:label="nyxh_CurrentDeferredCharges" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CurrentDeferredCharges" xlink:to="nyxh_CurrentDeferredCharges_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CurrentDeferredCharges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of current deferred charges.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CurrentDeferredCharges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Deferred Charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CurrentDeferredCharges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred charges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:label="ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets" xlink:to="ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accrued income other than current contract assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentAccruedIncomeOtherThanCurrentContractAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued income</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents" xlink:to="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short term deposits classified as cash equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short term deposit</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Cash" xlink:label="ifrs-full_Cash" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Cash" xlink:to="ifrs-full_Cash_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Cash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Cash_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current accounts</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseInCurrentAccounts" xlink:label="nyxh_IncreaseInCurrentAccounts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseInCurrentAccounts" xlink:to="nyxh_IncreaseInCurrentAccounts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseInCurrentAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase in current accounts.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseInCurrentAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase in Current Accounts</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseInCurrentAccounts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase of current accounts</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents" xlink:label="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents" xlink:to="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of decrease in short term deposits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease In Short Term Deposits Classified As Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DecreaseInShortTermDepositsClassifiedAsCashEquivalents_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease of short term deposits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_MaturityShortTermDepostisMonths" xlink:label="nyxh_MaturityShortTermDepostisMonths" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_MaturityShortTermDepostisMonths" xlink:to="nyxh_MaturityShortTermDepostisMonths_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_MaturityShortTermDepostisMonths_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the maturity short term deposits in months.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_MaturityShortTermDepostisMonths_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity Short Term Depostis Months</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsTable" xlink:label="ifrs-full_DisclosureOfFinancialAssetsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialAssetsTable" xlink:to="ifrs-full_DisclosureOfFinancialAssetsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialAssetsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsAxis" xlink:label="ifrs-full_ClassesOfAssetsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfAssetsAxis" xlink:to="ifrs-full_ClassesOfAssetsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfAssetsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of assets [Member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain" xlink:label="ifrs-full_ClassesOfAssetsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfAssetsDomain" xlink:to="ifrs-full_ClassesOfAssetsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfAssetsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of assets [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember" xlink:label="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember" xlink:to="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for financial assets that could generate an exchange gain or loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Assets Which could generate an exchange gain or loss [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancialAssetsWhichCouldGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current financial assets - Generating exchange gain or loss</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember" xlink:label="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember" xlink:to="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for financial assets that would not generate an exchange gain or loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Assets Which would not generate an exchange gain or loss [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancialAssetsWhichWouldNotGenerateExchangeGainOrLossMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current financial assets - Not generating exchange gain or loss</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TermDeposits.Member" xlink:label="nyxh_TermDeposits.Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TermDeposits.Member" xlink:to="nyxh_TermDeposits.Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TermDeposits.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for term deposits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TermDeposits.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term Deposits. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TermDeposits.Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Term deposits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_UsdTermDepositsMember" xlink:label="nyxh_UsdTermDepositsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_UsdTermDepositsMember" xlink:to="nyxh_UsdTermDepositsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_UsdTermDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for USD term deposits.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_UsdTermDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">USD Term Deposits [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_UsdTermDepositsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">USD term deposits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_UsTreasuryBillsMember" xlink:label="nyxh_UsTreasuryBillsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_UsTreasuryBillsMember" xlink:to="nyxh_UsTreasuryBillsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_UsTreasuryBillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for US Treasury Bills</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_UsTreasuryBillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Us Treasury Bills [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_UsTreasuryBillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">US Treasury bills</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialAssetsLineItems" xlink:to="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial assets [line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialAssetsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DebtInstrumentsHeld" xlink:label="ifrs-full_DebtInstrumentsHeld" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DebtInstrumentsHeld" xlink:to="ifrs-full_DebtInstrumentsHeld_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DebtInstrumentsHeld_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt instruments held</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalTable" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of classes of share capital [Table]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CommonShareMember" xlink:label="nyxh_CommonShareMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CommonShareMember" xlink:to="nyxh_CommonShareMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CommonShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents Common shares member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CommonShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CommonShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Common shares</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TotalOfShareMember" xlink:label="nyxh_TotalOfShareMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TotalOfShareMember" xlink:to="nyxh_TotalOfShareMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TotalOfShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents Total of shares member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TotalOfShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total Of Share [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TotalOfShareMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total of shares</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ParValueMember" xlink:label="nyxh_ParValueMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ParValueMember" xlink:to="nyxh_ParValueMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ParValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Par value [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ParValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapitalMember" xlink:label="ifrs-full_IssuedCapitalMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IssuedCapitalMember" xlink:to="ifrs-full_IssuedCapitalMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IssuedCapitalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IssuedCapitalMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems" xlink:to="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of classes of share capital [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfClassesOfShareCapitalLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Capital, Share Premium, Reserves</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio" xlink:label="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio" xlink:to="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Stockholders' Equity Note, Stock Split, Conversion Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsStockholdersEquityNoteStockSplitConversionRatio_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock split ratio</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesOutstanding" xlink:label="ifrs-full_NumberOfSharesOutstanding" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfSharesOutstanding" xlink:to="ifrs-full_NumberOfSharesOutstanding_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfSharesOutstanding_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding common shares</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharePremiumBeforeDeductionOfTransactionCosts" xlink:label="nyxh_SharePremiumBeforeDeductionOfTransactionCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharePremiumBeforeDeductionOfTransactionCosts" xlink:to="nyxh_SharePremiumBeforeDeductionOfTransactionCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharePremiumBeforeDeductionOfTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium before deduction of the transaction costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharePremiumBeforeDeductionOfTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium before deduction of transaction costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharePremiumBeforeDeductionOfTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share premium before deduction of transaction costs</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesIssued" xlink:label="ifrs-full_NumberOfSharesIssued" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfSharesIssued" xlink:to="ifrs-full_NumberOfSharesIssued_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NumberOfSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Shares issued.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfSharesIssued_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of shares issued</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ParValuePerShare" xlink:label="ifrs-full_ParValuePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ParValuePerShare" xlink:to="ifrs-full_ParValuePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ParValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Par value per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ParValuePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital per share</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity" xlink:to="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through exercise of warrants, equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughExerciseOfWarrantsEquity_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise of warrants (equity)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareCapitalAndSharePremiumMember" xlink:label="nyxh_ShareCapitalAndSharePremiumMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareCapitalAndSharePremiumMember" xlink:to="nyxh_ShareCapitalAndSharePremiumMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareCapitalAndSharePremiumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareCapitalAndSharePremiumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Capital and Share Premium [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareCapitalAndSharePremiumMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share capital and share premium</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SalePricePerShare" xlink:label="nyxh_SalePricePerShare" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SalePricePerShare" xlink:to="nyxh_SalePricePerShare_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SalePricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Price per share sold to the public.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SalePricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sale Price Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SalePricePerShare_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share price</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComponentsOfEquityAxis" xlink:to="ifrs-full_ComponentsOfEquityAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComponentsOfEquityAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Components of equity [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain" xlink:label="ifrs-full_ComponentsOfEquityDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ComponentsOfEquityDomain" xlink:to="ifrs-full_ComponentsOfEquityDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ComponentsOfEquityDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Components of equity [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember" xlink:to="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserve of exchange differences on translation [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currency translation reserve</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember" xlink:label="ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember" xlink:to="ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Reserve of remeasurements of defined benefit plans [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ReserveOfRemeasurementsOfDefinedBenefitPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post- employment benefit obligations</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherComprehensiveIncomeReserveLineItems" xlink:label="nyxh_OtherComprehensiveIncomeReserveLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherComprehensiveIncomeReserveLineItems" xlink:to="nyxh_OtherComprehensiveIncomeReserveLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherComprehensiveIncomeReserveLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other comprehensive income reserve [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherComprehensiveIncomeReserveLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Capital, Share Premium, Reserves</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of terms and conditions of share based payment arrangement [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:to="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of share based payments arrangements [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:to="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Types of share-based payment arrangements [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementAllPlansMember" xlink:label="nyxh_ShareBasedPaymentArrangementAllPlansMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementAllPlansMember" xlink:to="nyxh_ShareBasedPaymentArrangementAllPlansMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementAllPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements for all equity-settled warrant plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementAllPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangement All Plans [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementAllPlansMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangement All Plan</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2024Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2024Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2024 Plan</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2025Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2025Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2025</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan20252Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan20252Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan20252Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2025-2.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025-2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2025-2</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems" xlink:to="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of terms and conditions of share based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-Based Compensation</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfEquitySettledShareBasedIncentivePlans" xlink:label="nyxh_NumberOfEquitySettledShareBasedIncentivePlans" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfEquitySettledShareBasedIncentivePlans" xlink:to="nyxh_NumberOfEquitySettledShareBasedIncentivePlans_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfEquitySettledShareBasedIncentivePlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of equity settled share based incentive plans.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfEquitySettledShareBasedIncentivePlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Equity Settled Share Based Incentive Plans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfEquitySettledShareBasedIncentivePlans_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of equity settled share-based incentive plans</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments outstanding in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding as at June 30</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding at January 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of outstanding warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted" xlink:to="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfInstrumentsOtherEquityInstrumentsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Granted</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments forfeited in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Forfeited</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments exercised or vested in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercised.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments expired in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expired</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement" xlink:to="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of other equity instruments exercisable in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Outstanding as at June 30</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfWarrantsGrantedAndNotAccepted" xlink:label="nyxh_NumberOfWarrantsGrantedAndNotAccepted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfWarrantsGrantedAndNotAccepted" xlink:to="nyxh_NumberOfWarrantsGrantedAndNotAccepted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfWarrantsGrantedAndNotAccepted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of warrants granted but not accepted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfWarrantsGrantedAndNotAccepted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Warrants Granted And Not Accepted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfWarrantsGrantedAndNotAccepted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants not accepted</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents share based payment arrangements plan 2021 (Sep 17 grant 2021).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2021 Grant Sept 17 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantSept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant Sept 17 2021)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents share based payment arrangements plan 2021 (Sep 17 grant 2 2021).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2021 Grant 2 Sept 17 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Sept172021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant Sept 17 2021)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents share based payment arrangements plan 2021 (Oct 27 grant 2021).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2021 Grant Oct 27 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021GrantOct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant Oct 27 2021)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">It represents share-based payment arrangements plan 2021 (Oct 27 grant 2 2021).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2021 Grant 2 Oct 27 2021 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2021Grant2Oct272021Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant Oct 27 2021)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share based payment arrangements plan 2021 grant February 21 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2021 Grant Feb 21 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantFeb212022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant Feb 21 2022)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share based payment arrangements plan 2021 grant may 14 2022.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2021 Grant May 14 2022 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMay142022Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant May 14 2022)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2021 grant March 24 2023.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2021 Grant March 24 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2021GrantMarch242023Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2021 (grant March 24 2023)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share based payment arrangements plan 2022 grant Feb 01, 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2022 Grant Feb 01 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantFeb012024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2022 (grant Feb 01 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share based payment arrangements plan 2022 grant Apr 21 2024, 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2022 Grant Apr 21 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantApr212024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2022 (grant Apr 21 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2022 grant Aug 2 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2022 Grant Aug 2 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022GrantAug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2022 (grant Aug 2 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2022 grant 2 Aug 2 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2022 Grant 2 Aug 2 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2022Grant2Aug22024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2022 (grant Aug 2 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2024 grant Sep 18 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2024 Grant Sep 18 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantSep182024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2024 (grant Sep 18 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2024 grant Nov 25 2024.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2024 Grant Nov 25 2024 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantNov252024Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2024 (grant Nov 25 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2024 grant feb 1 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2024 Grant Feb 1 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2024GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2024 (grant Feb 1 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant feb 1 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2025 Grant Feb 1 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantFeb12025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Feb 1 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant Mar 14 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2025 Grant Mar 14 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantMar142025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Mar 14 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member" xlink:to="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant Apr 8 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sharebased Payment Arrangements Plan 2025 Grant Apr 8 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SharebasedPaymentArrangementsPlan2025GrantApr82025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Apr 8 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant on May 5, 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025, Grant May 5, 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment arrangements plan 2025 grant on May 5, 2025</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantMay52025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant May 5 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share-based payment arrangements plan 2024 grant on June 26, 2026</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2024, Grant June 26, 2026 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2024GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2024 (grant Jun 26 2026)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2025 grant on June 26, 2026.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025, Grant June 26, 2026 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Jun 26 2026)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2025-2 grant on June 26, 2026.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025-2, Grant June 26, 2026 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJune262026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025-2 (grant Jun 26 2026)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant on Sep 6, 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025, Grant Sep 6, 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantSep62025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Sep 6 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents for share-based payment arrangements plan 2025 grant on Oct 13, 2025.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025, Grant Oct 13, 2025 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan2025GrantOct132025Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Plan 2025 (grant Oct 13 2025)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member" xlink:to="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for share based payment arrangements plan 2025-2 grant on January 18, 2026.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share Based Payment Arrangements Plan 2025-2, Grant January 18, 2026 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ShareBasedPaymentArrangementsPlan20252GrantJanuary182026Member_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">2025-2 Plan (grant Jan 18 2026)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeAxis" xlink:label="ifrs-full_RangeAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RangeAxis" xlink:to="ifrs-full_RangeAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RangeAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain" xlink:label="ifrs-full_RangeDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RangeDomain" xlink:to="ifrs-full_RangeDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RangeDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Range [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember" xlink:label="ifrs-full_BottomOfRangeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BottomOfRangeMember" xlink:to="ifrs-full_BottomOfRangeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BottomOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bottom of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BottomOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Minimum</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember" xlink:label="ifrs-full_TopOfRangeMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TopOfRangeMember" xlink:to="ifrs-full_TopOfRangeMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TopOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Top of range [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TopOfRangeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maximum</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpectedDividendAsPercentageOtherEquityInstruments" xlink:label="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments" xlink:to="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of an expected dividend used to calculate the fair value of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected Dividend As Percentage Other Equity Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ExpectedDividendAsPercentageOtherEquityInstruments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Return Dividend</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted" xlink:label="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted" xlink:to="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The expected volatility of the share price used to calculate the fair value of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description Of Expected Volatility Other Equity Instrument Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DescriptionOfExpectedVolatilityOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected volatility</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted." xlink:label="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted." xlink:to="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description Of Risk Free Interest Rate Other Equity Instrument Granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DescriptionOfRiskFreeInterestRateOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Risk-free interest rate.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted" xlink:label="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted" xlink:to="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The option life of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Description Of Option Life Other Equity Instrument Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DescriptionOfOptionLifeOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expected life</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExercisePriceOtherEquityInstrumentGranted" xlink:label="nyxh_ExercisePriceOtherEquityInstrumentGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExercisePriceOtherEquityInstrumentGranted" xlink:to="nyxh_ExercisePriceOtherEquityInstrumentGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExercisePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The exercise price of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExercisePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise Price Other Equity Instrument Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ExercisePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted" xlink:label="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted" xlink:to="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The weighted average share price used as input to the option pricing model to calculate the fair value of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted Average Share Price Other Equity Instrument Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_WeightedAverageSharePriceOtherEquityInstrumentGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock price</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FairValueOtherEquityInstrumentGranted." xlink:label="nyxh_FairValueOtherEquityInstrumentGranted." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FairValueOtherEquityInstrumentGranted." xlink:to="nyxh_FairValueOtherEquityInstrumentGranted._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of other equity instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value Other Equity Instrument granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncrementalFairValueOtherEquityInstrumentGranted." xlink:label="nyxh_IncrementalFairValueOtherEquityInstrumentGranted." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncrementalFairValueOtherEquityInstrumentGranted." xlink:to="nyxh_IncrementalFairValueOtherEquityInstrumentGranted._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncrementalFairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Incremental fair value used as input to the option pricing model to calculate the fair value of share options granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncrementalFairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Incremental Fair Value Other Equity Instrument Granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncrementalFairValueOtherEquityInstrumentGranted._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Incremental Fair value</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExercisePricePerWarrant" xlink:label="nyxh_ExercisePricePerWarrant" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExercisePricePerWarrant" xlink:to="nyxh_ExercisePricePerWarrant_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExercisePricePerWarrant_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The exercise price of per warrant.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExercisePricePerWarrant_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise Price Per Warrant</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RestrictedShareUnitsMember" xlink:label="ifrs-full_RestrictedShareUnitsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RestrictedShareUnitsMember" xlink:to="ifrs-full_RestrictedShareUnitsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RestrictedShareUnitsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Restricted share units [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RestrictedShareUnitsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">RSU</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019" xlink:to="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average exercise price of other equity instruments granted in share-based payment arrangement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement2019_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subscription price per share</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors" xlink:label="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors" xlink:to="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the number of directors for whom, other equity instruments (ie other than share options) granted in a share-based payment arrangement.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Instruments Other Equity Instruments Grants, Number of Directors</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfInstrumentsOtherEquityInstrumentsGrantsNumberOfDirectors_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of directors</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xlink:label="ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets" xlink:to="ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from equity-settled share-based payment transactions</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants" xlink:label="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants" xlink:to="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of expense from share-based payment transactions with employees that relates to the incremental fair value of the re-priced warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense Share Based Payment Related To Incremental Fair Value Of The Re Priced Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ExpenseShareBasedPaymentRelatedToIncrementalFairValueOfRePricedWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value of the re-priced warrants</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFinancialDebtTable" xlink:label="nyxh_DisclosureOfFinancialDebtTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFinancialDebtTable" xlink:to="nyxh_DisclosureOfFinancialDebtTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFinancialDebtTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial debt [Table]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfFinancialDebtLineItems" xlink:label="nyxh_DisclosureOfFinancialDebtLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfFinancialDebtLineItems" xlink:to="nyxh_DisclosureOfFinancialDebtLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfFinancialDebtLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of Financial Debt [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfFinancialDebtLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial debt</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NonCurrentRecoverableCashAdvances" xlink:label="nyxh_NonCurrentRecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NonCurrentRecoverableCashAdvances" xlink:to="nyxh_NonCurrentRecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NonCurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of non-current recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NonCurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non Current Recoverable Cash Advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NonCurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances - Non-current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_NonCurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CurrentRecoverableCashAdvances" xlink:label="nyxh_CurrentRecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CurrentRecoverableCashAdvances" xlink:to="nyxh_CurrentRecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of current recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Recoverable Cash Advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances - Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_CurrentRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvances" xlink:label="nyxh_RecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvances" xlink:to="nyxh_RecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="nyxh_RecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">As at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="nyxh_RecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">As at January 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="nyxh_RecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_EibFinanceAgreementNonCurrent" xlink:label="nyxh_EibFinanceAgreementNonCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_EibFinanceAgreementNonCurrent" xlink:to="nyxh_EibFinanceAgreementNonCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_EibFinanceAgreementNonCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of EIB Finance Agreement Non-Current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_EibFinanceAgreementNonCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Finance Agreement Non Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_EibFinanceAgreementNonCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB finance agreement - Non-current</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_EibAccruedInterestCurrent" xlink:label="nyxh_EibAccruedInterestCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_EibAccruedInterestCurrent" xlink:to="nyxh_EibAccruedInterestCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_EibAccruedInterestCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of EIB accrued interest current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_EibAccruedInterestCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB Accrued Interest, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_EibAccruedInterestCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EIB accrued interest - Current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentWarrantLiability" xlink:label="ifrs-full_NoncurrentWarrantLiability" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NoncurrentWarrantLiability" xlink:to="ifrs-full_NoncurrentWarrantLiability_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NoncurrentWarrantLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current warrant liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NoncurrentWarrantLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Synthetic warrants - Non-current</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinancialLiabilities" xlink:label="ifrs-full_OtherFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherFinancialLiabilities" xlink:to="ifrs-full_OtherFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total EIB</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ConvertibleBondsCurrent" xlink:label="nyxh_ConvertibleBondsCurrent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ConvertibleBondsCurrent" xlink:to="nyxh_ConvertibleBondsCurrent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ConvertibleBondsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of convertible bonds, current.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ConvertibleBondsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Convertible Bonds, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ConvertibleBondsCurrent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Convertible bond - Current</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ConvertibleBonds" xlink:label="nyxh_ConvertibleBonds" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ConvertibleBonds" xlink:to="nyxh_ConvertibleBonds_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of convertible bonds.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Convertible Bonds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="nyxh_ConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total convertible bond</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfRecoverableCashAdvancesTable" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfRecoverableCashAdvancesTable" xlink:to="nyxh_DisclosureOfRecoverableCashAdvancesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of recoverable cash advances [Table]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvanceAxis" xlink:label="nyxh_RecoverableCashAdvanceAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvanceAxis" xlink:to="nyxh_RecoverableCashAdvanceAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvanceAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvanceAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advance [Axis]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvanceDomain" xlink:label="nyxh_RecoverableCashAdvanceDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvanceDomain" xlink:to="nyxh_RecoverableCashAdvanceDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvanceDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">N/A</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvanceDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advance [Domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SleepApneaDeviceMember" xlink:label="nyxh_SleepApneaDeviceMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SleepApneaDeviceMember" xlink:to="nyxh_SleepApneaDeviceMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SleepApneaDeviceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for sleep apnea device</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SleepApneaDeviceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sleep Apnea Device [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SleepApneaDeviceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sleep apnea device</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_SleepApneaDeviceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract 6472</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FirstArticlesMember" xlink:label="nyxh_FirstArticlesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FirstArticlesMember" xlink:to="nyxh_FirstArticlesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FirstArticlesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for first articles</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FirstArticlesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First Articles [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FirstArticlesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">First articles</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_FirstArticlesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract 6839</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ClinicalTrialsMember" xlink:label="nyxh_ClinicalTrialsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ClinicalTrialsMember" xlink:to="nyxh_ClinicalTrialsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ClinicalTrialsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for clinical trials</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ClinicalTrialsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical Trials [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ClinicalTrialsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical trial</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ClinicalTrialsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract 6840</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ActivationChipImprovementsMember" xlink:label="nyxh_ActivationChipImprovementsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ActivationChipImprovementsMember" xlink:to="nyxh_ActivationChipImprovementsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ActivationChipImprovementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activation chip improvements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ActivationChipImprovementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Activation chip improvements [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ActivationChipImprovementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Activation chip improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ActivationChipImprovementsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract 7388</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfRecoverableCashAdvancesLineItems" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfRecoverableCashAdvancesLineItems" xlink:to="nyxh_DisclosureOfRecoverableCashAdvancesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line item represent the disclosure of research and development expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of Recoverable Cash Advances [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of research and development expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_DisclosureOfRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ContractualRecoverableCashAdvances" xlink:label="nyxh_ContractualRecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ContractualRecoverableCashAdvances" xlink:to="nyxh_ContractualRecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ContractualRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of contractual recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ContractualRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contractual Recoverable Cash Advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ContractualRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contractual advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvancesReceived" xlink:label="nyxh_RecoverableCashAdvancesReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvancesReceived" xlink:to="nyxh_RecoverableCashAdvancesReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvancesReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of recoverable cash advances received.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvancesReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashAdvancesReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advances received</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashFixedReimbursed" xlink:label="nyxh_RecoverableCashFixedReimbursed" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashFixedReimbursed" xlink:to="nyxh_RecoverableCashFixedReimbursed_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashFixedReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of recoverable cash fixed reimbursed by the company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashFixedReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash fixed Reimbursed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashFixedReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fixed reimbursements</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashVariableReimbursed" xlink:label="nyxh_RecoverableCashVariableReimbursed" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashVariableReimbursed" xlink:to="nyxh_RecoverableCashVariableReimbursed_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashVariableReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of recoverable cash variable reimbursed by the company.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashVariableReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash variable Reimbursed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashVariableReimbursed_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Variable reimbursements</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_AdvancesReimbursedExcludingInterests" xlink:label="nyxh_AdvancesReimbursedExcludingInterests" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_AdvancesReimbursedExcludingInterests" xlink:to="nyxh_AdvancesReimbursedExcludingInterests_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_AdvancesReimbursedExcludingInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the amount of advances reimbursed (excluding interests).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_AdvancesReimbursedExcludingInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advances reimbursed (excluding interests)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_AdvancesReimbursedExcludingInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Advances reimbursed (excluding interest)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashLiabilityInterestPaid" xlink:label="nyxh_RecoverableCashLiabilityInterestPaid" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashLiabilityInterestPaid" xlink:to="nyxh_RecoverableCashLiabilityInterestPaid_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashLiabilityInterestPaid_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of interest paid on recoverable cash.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashLiabilityInterestPaid_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Liability Interest Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_RecoverableCashLiabilityInterestPaid_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest paid</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_InitialMeasurementAndRemeasurement" xlink:label="nyxh_InitialMeasurementAndRemeasurement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_InitialMeasurementAndRemeasurement" xlink:to="nyxh_InitialMeasurementAndRemeasurement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_InitialMeasurementAndRemeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of Initial measurement and Re-measurement classified as other operating income and expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_InitialMeasurementAndRemeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Initial measurement and re-measurement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_InitialMeasurementAndRemeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Initial measurement and re-measurement.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvancesDiscountingImpactB.s" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpactB.s" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvancesDiscountingImpactB.s" xlink:to="nyxh_RecoverableCashAdvancesDiscountingImpactB.s_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpactB.s_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of recoverable cash advances discounting impact.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpactB.s_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advances Discounting Impact B.S</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpactB.s_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discounting impact</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SensitivityAnalysisTable" xlink:label="nyxh_SensitivityAnalysisTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SensitivityAnalysisTable" xlink:to="nyxh_SensitivityAnalysisTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SensitivityAnalysisTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sensitivity analysis [Table]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_VariationOfRevenueProjectionAxis" xlink:label="nyxh_VariationOfRevenueProjectionAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_VariationOfRevenueProjectionAxis" xlink:to="nyxh_VariationOfRevenueProjectionAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_VariationOfRevenueProjectionAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_VariationOfRevenueProjectionAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Variation Of Revenue Projection Axis</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_VariationOfRevenueProjectionsDomain" xlink:label="nyxh_VariationOfRevenueProjectionsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_VariationOfRevenueProjectionsDomain" xlink:to="nyxh_VariationOfRevenueProjectionsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_VariationOfRevenueProjectionsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_VariationOfRevenueProjectionsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Variation Of Revenue Projections [Domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TwentyFivePercentRevenueProjectionDecreaseMember" xlink:label="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember" xlink:to="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for -25% revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Twenty Five Percent Revenue Projection Decrease [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TwentyFivePercentRevenueProjectionDecreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">-25% revenue</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ZeroPercentRevenueProjectionIncreaseMember" xlink:label="nyxh_ZeroPercentRevenueProjectionIncreaseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ZeroPercentRevenueProjectionIncreaseMember" xlink:to="nyxh_ZeroPercentRevenueProjectionIncreaseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ZeroPercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stand for +0% revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ZeroPercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Zero Percent Revenue Projection Increase [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ZeroPercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">+0% revenue</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TwentyFivePercentRevenueProjectionIncreaseMember" xlink:label="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember" xlink:to="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for +25% revenue.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Twenty Five Percent Revenue Projection Increase [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_TwentyFivePercentRevenueProjectionIncreaseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">+25% revenue</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DiscountRateMeasurementInputMember" xlink:label="ifrs-full_DiscountRateMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DiscountRateMeasurementInputMember" xlink:to="ifrs-full_DiscountRateMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DiscountRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DiscountRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RevenueProjectionsMember" xlink:label="nyxh_RevenueProjectionsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RevenueProjectionsMember" xlink:to="nyxh_RevenueProjectionsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RevenueProjectionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for revenue projections.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RevenueProjectionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue Projections [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RevenueProjectionsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue projections</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvancesMember" xlink:label="nyxh_RecoverableCashAdvancesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvancesMember" xlink:to="nyxh_RecoverableCashAdvancesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvancesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvancesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advances [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_RecoverableCashAdvancesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable Cash Advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems" xlink:label="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems" xlink:to="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line item represents the sensitivity analysis recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sensitivity analysis recoverable cash advances [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SensitivityAnalysisRecoverableCashAdvancesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sensitivity analysis recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement due to reasonably possible decrease in unobservable input, recognised in profit or loss, before tax, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleDecreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">(25%) variation of revenue projections</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:label="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:to="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in the fair value measurement of liabilities, recognised in profit or loss before tax, due to no change in an unobservable input.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase decrease in fair value measurement due to no change in unobservable input, recognised in profit or loss, before tax, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInFairValueMeasurementDueToNoChangeInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">0% variation of revenue projections</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement due to reasonably possible increase in unobservable input, recognised in profit or loss, before tax, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementDueToReasonablyPossibleIncreaseInUnobservableInputRecognisedInProfitOrLossBeforeTaxLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">25% variation of revenue projections</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SensitivityAnalysisNegativePercentageChange" xlink:label="nyxh_SensitivityAnalysisNegativePercentageChange" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SensitivityAnalysisNegativePercentageChange" xlink:to="nyxh_SensitivityAnalysisNegativePercentageChange_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SensitivityAnalysisNegativePercentageChange_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the sensitivity analysis negative percentage change.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SensitivityAnalysisNegativePercentageChange_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Sensitivity analysis negative percentage change</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SensitivityAnalysisNegativePercentageChange_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of discount rate (in negative)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xlink:to="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the discount rate used for the fixed part of the recoverable cash advances by a change of 25 percent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate used for the fixed part of the recoverable cash advances by a change of 25 percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate used for the fixed part of the recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances" xlink:to="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the discount rate used for the fixed part of the recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate used for the fixed part of the recoverable cash advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DiscountRateUsedForTheFixedPartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate fixed part reimbursement recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent" xlink:to="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the discount rate used for the variable part of the recoverable cash advances by a change of 25 percent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate used for the variable part of the recoverable cash advances by a change of 25 percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvancesByAChangeOf25Percent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate for variable part</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances" xlink:to="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the percentage of discount rate used for the variable part of the recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate used for the variable part of the recoverable cash advances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DiscountRateUsedForTheVariablePartOfTheRecoverableCashAdvances_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Discount rate variable part reimbursement recoverable cash advances</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about borrowings [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis" xlink:label="ifrs-full_BorrowingsByNameAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsByNameAxis" xlink:to="ifrs-full_BorrowingsByNameAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsByNameAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings by name [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameDomain" xlink:label="ifrs-full_BorrowingsByNameDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsByNameDomain" xlink:to="ifrs-full_BorrowingsByNameDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsByNameDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings by name [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_LoanFacilityWithEuropeanInvestmentBankMember" xlink:label="nyxh_LoanFacilityWithEuropeanInvestmentBankMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_LoanFacilityWithEuropeanInvestmentBankMember" xlink:to="nyxh_LoanFacilityWithEuropeanInvestmentBankMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_LoanFacilityWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This loan facility agreement with the European Investment Bank (EIB)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_LoanFacilityWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan Facility With European Investment Bank [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_LoanFacilityWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loan facility agreement with the European Investment Bank (EIB).</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember" xlink:label="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember" xlink:to="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for synthetic warrants agreements with European investment bank.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Synthetic Warrant Agreement with European Investment Bank [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SyntheticWarrantAgreementWithEuropeanInvestmentBankMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Synthetic warrant</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ThirdTrancheMember" xlink:label="nyxh_ThirdTrancheMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ThirdTrancheMember" xlink:to="nyxh_ThirdTrancheMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ThirdTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This information pertaining to Third Tranche Member.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ThirdTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Third Tranche [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ThirdTrancheMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Third tranche</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems" xlink:to="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about borrowings</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotionalAmount" xlink:label="ifrs-full_NotionalAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_NotionalAmount" xlink:to="ifrs-full_NotionalAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_NotionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_NotionalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Notional amount</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings" xlink:label="ifrs-full_Borrowings" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Borrowings" xlink:to="ifrs-full_Borrowings_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Borrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Borrowings_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_BorrowingsAnnualCashInterestRate" xlink:label="nyxh_BorrowingsAnnualCashInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_BorrowingsAnnualCashInterestRate" xlink:to="nyxh_BorrowingsAnnualCashInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_BorrowingsAnnualCashInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the annual cash interest rate of borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_BorrowingsAnnualCashInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, Annual Cash Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_BorrowingsAnnualCashInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings annual cash interest rate</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_BorrowingsCapitalizedInterestRate" xlink:label="nyxh_BorrowingsCapitalizedInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_BorrowingsCapitalizedInterestRate" xlink:to="nyxh_BorrowingsCapitalizedInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_BorrowingsCapitalizedInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the capitalized interest rate of borrowings.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_BorrowingsCapitalizedInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, Capitalized Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_BorrowingsCapitalizedInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings capitalized interest rate</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsWarrantsAndRightsOutstandingTerm" xlink:label="nyxh_IfrsWarrantsAndRightsOutstandingTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsWarrantsAndRightsOutstandingTerm" xlink:to="nyxh_IfrsWarrantsAndRightsOutstandingTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsWarrantsAndRightsOutstandingTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsWarrantsAndRightsOutstandingTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Warrants And Rights Outstanding, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsWarrantsAndRightsOutstandingTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrants and rights outstanding</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfWarrantsGranted" xlink:label="nyxh_NumberOfWarrantsGranted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfWarrantsGranted" xlink:to="nyxh_NumberOfWarrantsGranted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfWarrantsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The number of warrants granted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfWarrantsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Warrants Granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfWarrantsGranted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of warrants granted</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:label="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:to="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exercise price per share or per unit of warrants or rights outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ifrs Class of Warrant or Right, Exercise Price of Warrants or Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class of warrant</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PrepaymentOption" xlink:label="nyxh_PrepaymentOption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PrepaymentOption" xlink:to="nyxh_PrepaymentOption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of prepayment option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:label="nyxh_PrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment Option - As at June 30</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:label="nyxh_PrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment option - As at January 1</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialLiabilitiesAdditions" xlink:label="nyxh_FinancialLiabilitiesAdditions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialLiabilitiesAdditions" xlink:to="nyxh_FinancialLiabilitiesAdditions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialLiabilitiesAdditions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase in financial liabilities through additions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialLiabilitiesAdditions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Liabilities, Additions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancialLiabilitiesAdditions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">New debt</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts" xlink:to="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financing liabilities through transaction costs.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing Liabilities, Increase (Decrease) Through Transaction Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughTransactionCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Transaction cost related to loans and borrowings</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives" xlink:to="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financing liabilities through separation of non-closely related embedded derivatives.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing Liabilities, Increase (Decrease) Through Separation Of Non-Closely Related Embedded Derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancingLiabilitiesIncreaseDecreaseThroughSeparationOfNonCloselyRelatedEmbeddedDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Separation of non-closely related embedded derivates</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition" xlink:label="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition" xlink:to="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase in financial liabilities resulting from initial recognition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Liabilities, Increase from Initial Recognition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancialLiabilitiesIncreaseFromInitialRecognition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Subtotal: Initial recognition</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancingLiabilitiesInterestRateAdjustments" xlink:label="nyxh_FinancingLiabilitiesInterestRateAdjustments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancingLiabilitiesInterestRateAdjustments" xlink:to="nyxh_FinancingLiabilitiesInterestRateAdjustments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancingLiabilitiesInterestRateAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financing liabilities through interest rate adjustments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancingLiabilitiesInterestRateAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financing Liabilities, Interest Rate Adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FinancingLiabilitiesInterestRateAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Effective interest rate adjustment</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment" xlink:label="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment" xlink:to="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (decrease) in Prepayment Option Due To Fair Value Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Prepayment Option Due To Fair Value Adjustment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInPrepaymentOptionDueToFairValueAdjustment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Prepayment option - fair value adjustment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsInterestRate" xlink:label="ifrs-full_BorrowingsInterestRate" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BorrowingsInterestRate" xlink:to="ifrs-full_BorrowingsInterestRate_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BorrowingsInterestRate_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Borrowings, interest rate</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsDebtInstrumentTerm" xlink:label="nyxh_IfrsDebtInstrumentTerm" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsDebtInstrumentTerm" xlink:to="nyxh_IfrsDebtInstrumentTerm_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Debt Instrument, Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsDebtInstrumentTerm_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Maturity term</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DebtInstrumentsPrincipalAmount" xlink:label="nyxh_DebtInstrumentsPrincipalAmount" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DebtInstrumentsPrincipalAmount" xlink:to="nyxh_DebtInstrumentsPrincipalAmount_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DebtInstrumentsPrincipalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of debt instrument principal amount.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DebtInstrumentsPrincipalAmount_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Instruments Principal Amount</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PrincipalInstalmentPerBondInstrument" xlink:label="nyxh_PrincipalInstalmentPerBondInstrument" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PrincipalInstalmentPerBondInstrument" xlink:to="nyxh_PrincipalInstalmentPerBondInstrument_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PrincipalInstalmentPerBondInstrument_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of Principal Instalment Per Bond Instrument.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PrincipalInstalmentPerBondInstrument_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Principal Instalment Per Bond Instrument</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment" xlink:label="nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment" xlink:to="nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of Principal Instalment Per Bond Instrument Last Instalment.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PrincipalInstalmentPerBondInstrumentLastInstalment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Principal Instalment Per Bond Instrument Last Instalment</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsDebtInstrumentConvertibleConversionPrice" xlink:label="nyxh_IfrsDebtInstrumentConvertibleConversionPrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsDebtInstrumentConvertibleConversionPrice" xlink:to="nyxh_IfrsDebtInstrumentConvertibleConversionPrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsDebtInstrumentConvertibleConversionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The price per share of the conversion feature embedded in the debt instrument.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsDebtInstrumentConvertibleConversionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Debt Instrument, Convertible, Conversion Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_IfrsDebtInstrumentConvertibleConversionPrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion price</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised" xlink:label="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised" xlink:to="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) through amounts recognised in profit or loss, aggregate difference between fair value at initial recognition and transaction price yet to be recognised in profit or loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Day 1 loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseThroughAmountsRecognisedInProfitOrLossAggregateDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueYetToBeRecognised_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Difference between the transaction price and the fair value at initial recognition</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DebtConversionPrincipalAmountOfDebtConverted" xlink:label="nyxh_DebtConversionPrincipalAmountOfDebtConverted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DebtConversionPrincipalAmountOfDebtConverted" xlink:to="nyxh_DebtConversionPrincipalAmountOfDebtConverted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DebtConversionPrincipalAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The principal amount of debt being converted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DebtConversionPrincipalAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Conversion, Principal Amount of Debt Converted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DebtConversionPrincipalAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Principal amount of debt converted</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DebtConversionInterestAmountOfDebtConverted" xlink:label="nyxh_DebtConversionInterestAmountOfDebtConverted" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DebtConversionInterestAmountOfDebtConverted" xlink:to="nyxh_DebtConversionInterestAmountOfDebtConverted_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DebtConversionInterestAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest amount of debt being converted.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DebtConversionInterestAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Conversion, Interest Amount of Debt Converted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DebtConversionInterestAmountOfDebtConverted_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest amount of debt converted</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DebtConversionPercentageOfConversionPriceToSharePrice" xlink:label="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice" xlink:to="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of conversion price to share price.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Debt Conversion, Percentage of Conversion Price to Share Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DebtConversionPercentageOfConversionPriceToSharePrice_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of share price</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestRateMeasurementInputMember" xlink:label="ifrs-full_InterestRateMeasurementInputMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestRateMeasurementInputMember" xlink:to="ifrs-full_InterestRateMeasurementInputMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest rate, measurement input [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestRateMeasurementInputMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Coupon (interest) rate</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsMeasurementInputConversionPriceMember" xlink:label="nyxh_IfrsMeasurementInputConversionPriceMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsMeasurementInputConversionPriceMember" xlink:to="nyxh_IfrsMeasurementInputConversionPriceMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsMeasurementInputConversionPriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement input using price per share at which convertible share can be converted into common stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsMeasurementInputConversionPriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Measurement Input, Conversion Price [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsMeasurementInputConversionPriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion price</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsMeasurementInputSharePriceMember" xlink:label="nyxh_IfrsMeasurementInputSharePriceMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsMeasurementInputSharePriceMember" xlink:to="nyxh_IfrsMeasurementInputSharePriceMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsMeasurementInputSharePriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement input using share price of saleable stock.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsMeasurementInputSharePriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Measurement Input, Share Price [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsMeasurementInputSharePriceMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Stock price</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IfrsMeasurementInputExpectedDividendRateMember" xlink:label="nyxh_IfrsMeasurementInputExpectedDividendRateMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IfrsMeasurementInputExpectedDividendRateMember" xlink:to="nyxh_IfrsMeasurementInputExpectedDividendRateMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IfrsMeasurementInputExpectedDividendRateMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Measurement input using expected dividend rate to be paid to holder of share per year.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IfrsMeasurementInputExpectedDividendRateMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Measurement Input, Expected Dividend Rate [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IfrsMeasurementInputExpectedDividendRateMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Return dividend</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValue" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialLiabilitiesAtFairValue" xlink:to="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial liabilities, at fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total fair value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">As at January 1, 2025</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FinancialLiabilitiesDecreaseThroughConversions" xlink:label="nyxh_FinancialLiabilitiesDecreaseThroughConversions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FinancialLiabilitiesDecreaseThroughConversions" xlink:to="nyxh_FinancialLiabilitiesDecreaseThroughConversions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FinancialLiabilitiesDecreaseThroughConversions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of decrease in financial liabilities through conversions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FinancialLiabilitiesDecreaseThroughConversions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial Liabilities, Decrease Through Conversions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_FinancialLiabilitiesDecreaseThroughConversions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Conversion to shares</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DayOneLossAmortization" xlink:label="nyxh_DayOneLossAmortization" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DayOneLossAmortization" xlink:to="nyxh_DayOneLossAmortization_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DayOneLossAmortization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amortization of day 1 loss, difference between the transaction price and the fair value at initial recognition.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DayOneLossAmortization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Day One Loss, Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_DayOneLossAmortization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_DayOneLossAmortization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amortization day 1 loss convertible bond</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DayOneLossTotal" xlink:label="nyxh_DayOneLossTotal" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DayOneLossTotal" xlink:to="nyxh_DayOneLossTotal_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DayOneLossTotal_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of total day loss, difference between the transaction price and the fair value at initial recognition after amortisation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DayOneLossTotal_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Day One Loss, Total</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_DayOneLossTotal_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total day 1 loss</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NoncurrentProvisionsForConstructiveObligation" xlink:label="nyxh_NoncurrentProvisionsForConstructiveObligation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NoncurrentProvisionsForConstructiveObligation" xlink:to="nyxh_NoncurrentProvisionsForConstructiveObligation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NoncurrentProvisionsForConstructiveObligation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of non-current provisions for constructive obligation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NoncurrentProvisionsForConstructiveObligation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Noncurrent Provisions For Constructive Obligation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_NoncurrentProvisionsForConstructiveObligation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Provision for constructive obligation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermMiscellaneousOtherProvisions" xlink:label="ifrs-full_LongtermMiscellaneousOtherProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_LongtermMiscellaneousOtherProvisions" xlink:to="ifrs-full_LongtermMiscellaneousOtherProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_LongtermMiscellaneousOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current miscellaneous other provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_LongtermMiscellaneousOtherProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other provisions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherLongtermProvisions" xlink:label="ifrs-full_OtherLongtermProvisions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherLongtermProvisions" xlink:to="ifrs-full_OtherLongtermProvisions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherLongtermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other non-current provisions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_OtherLongtermProvisions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total provisions</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfPatentsUnderLitigation" xlink:label="nyxh_NumberOfPatentsUnderLitigation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfPatentsUnderLitigation" xlink:to="nyxh_NumberOfPatentsUnderLitigation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfPatentsUnderLitigation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of patents alleged to be infringed pursuant to the litigation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfPatentsUnderLitigation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of Patents Under Litigation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfPatentsUnderLitigation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of inspire patents</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherPayablesToTradeSuppliers" xlink:label="ifrs-full_TradeAndOtherPayablesToTradeSuppliers" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TradeAndOtherPayablesToTradeSuppliers" xlink:to="ifrs-full_TradeAndOtherPayablesToTradeSuppliers_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TradeAndOtherPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TradeAndOtherPayablesToTradeSuppliers_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Payables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_InvoicesToBeReceived" xlink:label="nyxh_InvoicesToBeReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_InvoicesToBeReceived" xlink:to="nyxh_InvoicesToBeReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_InvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The current amount of payment due to suppliers for goods and services used in entity's business for which invoices to be received.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_InvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Invoices to be received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_InvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Invoices to be received</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInTradePayables" xlink:label="nyxh_IncreaseDecreaseInTradePayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInTradePayables" xlink:to="nyxh_IncreaseDecreaseInTradePayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInTradePayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the increase (decrease) in total trade payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInTradePayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Trade Payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInTradePayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in total trade payables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInInvoicesToBeReceived" xlink:label="nyxh_IncreaseDecreaseInInvoicesToBeReceived" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInInvoicesToBeReceived" xlink:to="nyxh_IncreaseDecreaseInInvoicesToBeReceived_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInInvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the increase (decrease) in invoices to be received.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInInvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Invoices To Be Received</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInInvoicesToBeReceived_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In invoice to be received.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInPayables" xlink:label="nyxh_IncreaseDecreaseInPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInPayables" xlink:to="nyxh_IncreaseDecreaseInPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represent the increase (decrease) in trade payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Trade payables.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxExpenseIncome" xlink:label="ifrs-full_CurrentTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentTaxExpenseIncome" xlink:to="ifrs-full_CurrentTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax expense income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_CurrentTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current tax expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxExpenseIncome" xlink:label="ifrs-full_DeferredTaxExpenseIncome" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DeferredTaxExpenseIncome" xlink:to="ifrs-full_DeferredTaxExpenseIncome_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DeferredTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax expense income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_DeferredTaxExpenseIncome_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Deferred tax income/(expense)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_AdditionalTaxAccrualForUncertainPosition" xlink:label="nyxh_AdditionalTaxAccrualForUncertainPosition" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_AdditionalTaxAccrualForUncertainPosition" xlink:to="nyxh_AdditionalTaxAccrualForUncertainPosition_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_AdditionalTaxAccrualForUncertainPosition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional accrual of the liability for uncertain tax positions.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_AdditionalTaxAccrualForUncertainPosition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional Tax Accrual For Uncertain Position</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_AdditionalTaxAccrualForUncertainPosition_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Additional tax accrual for uncertain position</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries" xlink:label="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries" xlink:to="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The increase (Decrease) of income tax payable or reimbursed by subsidiaries.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Income Tax Payable Or Reimbursed by Subsidiaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInIncomeTaxPayableOrReimbursedBySubsidiaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) of income tax payable or reimbursed by subsidiaries.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions" xlink:label="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions" xlink:to="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of uncertain tax positions in current tax liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current Tax Liabilities Current, Uncertain Tax Positions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CurrentTaxLiabilitiesCurrentUncertainTaxPositions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Uncertain tax positions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:label="ifrs-full_ShorttermEmployeeBenefitsAccruals" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ShorttermEmployeeBenefitsAccruals" xlink:to="ifrs-full_ShorttermEmployeeBenefitsAccruals_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ShorttermEmployeeBenefitsAccruals_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term employee benefits accruals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ShorttermEmployeeBenefitsAccruals_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Holiday pay accrual</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_Salary" xlink:label="nyxh_Salary" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_Salary" xlink:to="nyxh_Salary_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_Salary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of salary payable included in other payables.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_Salary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Salary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_Salary_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Salary</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Accruals" xlink:label="ifrs-full_Accruals" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_Accruals" xlink:to="ifrs-full_Accruals_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_Accruals_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accruals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_Accruals_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Accrued expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentValueAddedTaxPayables" xlink:label="ifrs-full_CurrentValueAddedTaxPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CurrentValueAddedTaxPayables" xlink:to="ifrs-full_CurrentValueAddedTaxPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CurrentValueAddedTaxPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Current value added tax payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_CurrentValueAddedTaxPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">VAT payable</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherLiabilities" xlink:label="ifrs-full_OtherLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherLiabilities" xlink:to="ifrs-full_OtherLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInOtherPayables" xlink:label="nyxh_IncreaseDecreaseInOtherPayables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInOtherPayables" xlink:to="nyxh_IncreaseDecreaseInOtherPayables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInOtherPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of Increase (decrease) in other payables during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInOtherPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Other Payables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInOtherPayables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in other payables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInPayrollRelatedLiabilities" xlink:label="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities" xlink:to="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of increase (decrease) in payroll related liabilities during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Payroll Related Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInPayrollRelatedLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in payroll related liabilities.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInAccruedExpenses" xlink:label="nyxh_IncreaseDecreaseInAccruedExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInAccruedExpenses" xlink:to="nyxh_IncreaseDecreaseInAccruedExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInAccruedExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in accrued expenses during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInAccruedExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Accrued Expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInOtherLiabilities" xlink:label="nyxh_IncreaseDecreaseInOtherLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInOtherLiabilities" xlink:to="nyxh_IncreaseDecreaseInOtherLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInOtherLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in other liabilities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInOtherLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Other Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInOtherLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in other liabilities.</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of detailed information about financial instruments [table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis" xlink:label="srt_CurrencyAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_CurrencyAxis" xlink:to="srt_CurrencyAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_CurrencyAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Currency [Axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain" xlink:label="currency_AllCurrenciesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_AllCurrenciesDomain" xlink:to="currency_AllCurrenciesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_AllCurrenciesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">All Currencies [Domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_EUR" xlink:label="currency_EUR" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_EUR" xlink:to="currency_EUR_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_EUR_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">EUR</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_USD" xlink:label="currency_USD" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="currency_USD" xlink:to="currency_USD_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="currency_USD_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">USD</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:to="ifrs-full_ClassesOfFinancialInstrumentsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial instruments [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:to="ifrs-full_ClassesOfFinancialInstrumentsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of financial instruments [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ForeignCurrencyForwardsEurUsdInEurMember" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInEurMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ForeignCurrencyForwardsEurUsdInEurMember" xlink:to="nyxh_ForeignCurrencyForwardsEurUsdInEurMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInEurMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents foreign currency forwards EUR - USD (in EUR).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInEurMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign Currency Forwards EUR - USD (in EUR) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInEurMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency forwards EUR - USD (in EUR)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ForeignCurrencyForwardsEurUsdInUsdMember" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember" xlink:to="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents foreign currency forwards EUR - USD (in USD).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign Currency Forwards EUR - USD (in USD) [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ForeignCurrencyForwardsEurUsdInUsdMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency forwards EUR - USD (in USD)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of financial instruments [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency swaps and forwards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative financial instruments</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths" xlink:label="nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths" xlink:to="nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The duration of financial risk policy in hedging activities.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_HedgingTimelineFinancialRiskManagementPolicyInMonths_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Hedging timeline financial risk management policy in months</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ForeignCurrencyForwardsMember" xlink:label="nyxh_ForeignCurrencyForwardsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ForeignCurrencyForwardsMember" xlink:to="nyxh_ForeignCurrencyForwardsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ForeignCurrencyForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member represents foreign currency forwards.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ForeignCurrencyForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign Currency Forwards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ForeignCurrencyForwardsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign currency forwards</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets" xlink:label="ifrs-full_DerivativeFinancialAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DerivativeFinancialAssets" xlink:to="ifrs-full_DerivativeFinancialAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DerivativeFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative financial assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_DerivativeFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Closing value at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_DerivativeFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Opening value at January 1</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DerivativeFinancialAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueMember" xlink:label="ifrs-full_FinancialAssetsAtFairValueMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_FinancialAssetsAtFairValueMember" xlink:to="ifrs-full_FinancialAssetsAtFairValueMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_FinancialAssetsAtFairValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets at fair value, class [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_FinancialAssetsAtFairValueMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Financial assets</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets" xlink:to="ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (decrease) in fair value measurement, assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_IncreaseDecreaseInFairValueMeasurementAssets_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities" xlink:label="ifrs-full_DerivativeFinancialLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DerivativeFinancialLiabilities" xlink:to="ifrs-full_DerivativeFinancialLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Derivative financial liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Closing value at December 31</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ifrs-full_DerivativeFinancialLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Opening value at January 1</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SettlementsFairValueMeasurementLiabilities" xlink:label="ifrs-full_SettlementsFairValueMeasurementLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SettlementsFairValueMeasurementLiabilities" xlink:to="ifrs-full_SettlementsFairValueMeasurementLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SettlementsFairValueMeasurementLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Settlements, fair value measurement, liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_SettlementsFairValueMeasurementLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Settled contracts</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfExpensesTable" xlink:label="nyxh_DisclosureOfExpensesTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfExpensesTable" xlink:to="nyxh_DisclosureOfExpensesTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfExpensesTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of expenses [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis" xlink:label="ifrs-full_GeographicalAreasAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GeographicalAreasAxis" xlink:to="ifrs-full_GeographicalAreasAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GeographicalAreasAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical areas [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain" xlink:label="ifrs-full_GeographicalAreasDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GeographicalAreasDomain" xlink:to="ifrs-full_GeographicalAreasDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GeographicalAreasDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Geographical areas [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US" xlink:label="country_US" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_US_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">UNITED STATES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="country_US_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">US</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_DE" xlink:label="country_DE" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_DE" xlink:to="country_DE_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_DE_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Germany</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_GB" xlink:label="country_GB" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_GB" xlink:to="country_GB_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_GB_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">UNITED KINGDOM</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_GB_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">England</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_AE" xlink:label="country_AE" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_AE" xlink:to="country_AE_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_AE_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">UNITED ARAB EMIRATES</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_AE_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">UAE</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CH" xlink:label="country_CH" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CH" xlink:to="country_CH_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_CH_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Switzerland</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_NL" xlink:label="country_NL" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_NL" xlink:to="country_NL_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_NL_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">NETHERLANDS</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_NL_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Netherlands</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_AT" xlink:label="country_AT" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_AT" xlink:to="country_AT_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_AT_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Austria</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_ES" xlink:label="country_ES" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_ES" xlink:to="country_ES_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_ES_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Spain</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_IT" xlink:label="country_IT" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_IT" xlink:to="country_IT_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="country_IT_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">ITALY</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="country_IT_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Italy</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfResearchAndDevelopmentExpensesLineItems" xlink:label="nyxh_DisclosureOfResearchAndDevelopmentExpensesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfResearchAndDevelopmentExpensesLineItems" xlink:to="nyxh_DisclosureOfResearchAndDevelopmentExpensesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfResearchAndDevelopmentExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of research and development expenses [Line items]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_NumberOfCustomersWithIndividualSales" xlink:label="nyxh_NumberOfCustomersWithIndividualSales" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_NumberOfCustomersWithIndividualSales" xlink:to="nyxh_NumberOfCustomersWithIndividualSales_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_NumberOfCustomersWithIndividualSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of customers with individual sales larger than 10%.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_NumberOfCustomersWithIndividualSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number Of Customers With Individual Sales</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_NumberOfCustomersWithIndividualSales_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Number of customers with individual sales larger than 10%</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PercentageOfEntitysRevenue" xlink:label="ifrs-full_PercentageOfEntitysRevenue" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PercentageOfEntitysRevenue" xlink:to="ifrs-full_PercentageOfEntitysRevenue_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PercentageOfEntitysRevenue_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of entity's revenue</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RevenueNotRecognizedContractLiability" xlink:label="nyxh_RevenueNotRecognizedContractLiability" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RevenueNotRecognizedContractLiability" xlink:to="nyxh_RevenueNotRecognizedContractLiability_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RevenueNotRecognizedContractLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of revenue not recognized pertaining to contract liability.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RevenueNotRecognizedContractLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue Not Recognized, Contract Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RevenueNotRecognizedContractLiability_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Contract liability</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:label="ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:to="ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Revenue that was included in contract liability balance at beginning of period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-current contract liability balance at the beginning of the period</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PurchasesOfGoodsAndServices" xlink:label="nyxh_PurchasesOfGoodsAndServices" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PurchasesOfGoodsAndServices" xlink:to="nyxh_PurchasesOfGoodsAndServices_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PurchasesOfGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The purchases of goods and services of Revenue and costs of goods sold.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PurchasesOfGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases Of Goods And Services</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PurchasesOfGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Purchases of goods and services</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress" xlink:label="ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress" xlink:to="ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease (increase) in inventories of finished goods and work in progress</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ChangesInInventoriesOfFinishedGoodsAndWorkInProgress_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Inventory movement</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpenseCategoriesAxis" xlink:label="nyxh_ExpenseCategoriesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpenseCategoriesAxis" xlink:to="nyxh_ExpenseCategoriesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpenseCategoriesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpenseCategoriesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense categories [Axis]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpenseCategoriesDomain" xlink:label="nyxh_ExpenseCategoriesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpenseCategoriesDomain" xlink:to="nyxh_ExpenseCategoriesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpenseCategoriesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpenseCategoriesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense Categories [Domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_TotalCostMember" xlink:label="nyxh_TotalCostMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_TotalCostMember" xlink:to="nyxh_TotalCostMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_TotalCostMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total cost</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CapitalisedDevelopmentExpenditureMember" xlink:label="ifrs-full_CapitalisedDevelopmentExpenditureMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CapitalisedDevelopmentExpenditureMember" xlink:to="ifrs-full_CapitalisedDevelopmentExpenditureMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CapitalisedDevelopmentExpenditureMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OperatingExpensesMember" xlink:label="nyxh_OperatingExpensesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OperatingExpensesMember" xlink:to="nyxh_OperatingExpensesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OperatingExpensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating expense member</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CostsOfGoodsSoldLineItems" xlink:label="nyxh_CostsOfGoodsSoldLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CostsOfGoodsSoldLineItems" xlink:to="nyxh_CostsOfGoodsSoldLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CostsOfGoodsSoldLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Line item represent the cost of good sold.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CostsOfGoodsSoldLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cost Of Goods Sold [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CostsOfGoodsSoldLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and Development expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_CostsOfGoodsSoldLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ResearchAndDevelopmentExpenseOperatingExpense" xlink:label="nyxh_ResearchAndDevelopmentExpenseOperatingExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ResearchAndDevelopmentExpenseOperatingExpense" xlink:to="nyxh_ResearchAndDevelopmentExpenseOperatingExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ResearchAndDevelopmentExpenseOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of expenditure directly attributable to research or development activities, recognized under operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ResearchAndDevelopmentExpenseOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research And Development Expense Operating Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ResearchAndDevelopmentExpenseOperatingExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expense</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OperatingExpenseBenefits" xlink:label="nyxh_OperatingExpenseBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OperatingExpenseBenefits" xlink:to="nyxh_OperatingExpenseBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OperatingExpenseBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This information value pertaining to the operating expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OperatingExpenseBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Operating Expense Benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="nyxh_OperatingExpenseBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total operating expenses for the year ended</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpensesCategoriesAxis" xlink:label="nyxh_ExpensesCategoriesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpensesCategoriesAxis" xlink:to="nyxh_ExpensesCategoriesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpensesCategoriesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpensesCategoriesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses categories [Axis]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ExpensesCategoriesDomain" xlink:label="nyxh_ExpensesCategoriesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ExpensesCategoriesDomain" xlink:to="nyxh_ExpensesCategoriesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ExpensesCategoriesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">n/a</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ExpensesCategoriesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expenses categories [Domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ResearchAndDevelopmentExpensesMember" xlink:label="nyxh_ResearchAndDevelopmentExpensesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ResearchAndDevelopmentExpensesMember" xlink:to="nyxh_ResearchAndDevelopmentExpensesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ResearchAndDevelopmentExpensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to research and development expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ResearchAndDevelopmentExpensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and Development Expenses [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ResearchAndDevelopmentExpensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ResearchAndDevelopmentExpensesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research &amp; Development</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EmployeeBenefitsExpense" xlink:label="ifrs-full_EmployeeBenefitsExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EmployeeBenefitsExpense" xlink:to="ifrs-full_EmployeeBenefitsExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Staff costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_EmployeeBenefitsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total employee benefits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfessionalFeesExpense" xlink:label="ifrs-full_ProfessionalFeesExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ProfessionalFeesExpense" xlink:to="ifrs-full_ProfessionalFeesExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ProfessionalFeesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Professional fees expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ProfessionalFeesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Consulting and contractors' fees</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_QualityAssuranceRegulatory" xlink:label="nyxh_QualityAssuranceRegulatory" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_QualityAssuranceRegulatory" xlink:to="nyxh_QualityAssuranceRegulatory_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_QualityAssuranceRegulatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of expense related to quality assurance regulatory.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_QualityAssuranceRegulatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Quality Assurance Regulatory</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_QualityAssuranceRegulatory_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Q&amp;A regulatory</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationAndAmortisationExpense" xlink:label="ifrs-full_DepreciationAndAmortisationExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DepreciationAndAmortisationExpense" xlink:to="ifrs-full_DepreciationAndAmortisationExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DepreciationAndAmortisationExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation and amortisation expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DepreciationAndAmortisationExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation and amortization expense</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TravelExpense" xlink:label="ifrs-full_TravelExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_TravelExpense" xlink:to="ifrs-full_TravelExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_TravelExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Travel expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_TravelExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Travel</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ManufacturingAndOutsourcedDevelopmentsExpense" xlink:label="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense" xlink:to="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of manufacturing and outsourced developments expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Manufacturing And Outsourced Developments Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="nyxh_ManufacturingAndOutsourcedDevelopmentsExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Manufacturing and outsourced development</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ClinicalStudies" xlink:label="nyxh_ClinicalStudies" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ClinicalStudies" xlink:to="nyxh_ClinicalStudies_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ClinicalStudies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development cost related to clinical studies.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ClinicalStudies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical studies</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ClinicalStudies_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Clinical studies</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_InformationTechnologyExpense" xlink:label="nyxh_InformationTechnologyExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_InformationTechnologyExpense" xlink:to="nyxh_InformationTechnologyExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_InformationTechnologyExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT cost related to research and development cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_InformationTechnologyExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information technology expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_InformationTechnologyExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RentalExpense" xlink:label="ifrs-full_RentalExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RentalExpense" xlink:to="ifrs-full_RentalExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RentalExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Rental expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RentalExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Rent</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherExpenseByNature" xlink:label="ifrs-full_OtherExpenseByNature" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherExpenseByNature" xlink:to="ifrs-full_OtherExpenseByNature_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherExpenseByNature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other expense by nature</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherExpenseByNature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_OtherExpenseByNature_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CapitalizedCosts" xlink:label="nyxh_CapitalizedCosts" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CapitalizedCosts" xlink:to="nyxh_CapitalizedCosts_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CapitalizedCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development cost capitalised.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CapitalizedCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_CapitalizedCosts_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalized costs</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses" xlink:label="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses" xlink:to="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in research and development expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Research And Development Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in research and development expense.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses" xlink:label="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses" xlink:to="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of increase (decrease) in research and development expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Increase Decrease In Research And Development Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PercentageIncreaseDecreaseInResearchAndDevelopmentExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of increase (decrease) in research and development expense.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization" xlink:label="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization" xlink:to="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of research and development expenses before capitalization.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and Development Expenses Before Capitalization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ResearchAndDevelopmentExpensesBeforeCapitalization_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Research and development expenses before capitalization</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherOperatingIncomeExpenseAbstract" xlink:label="nyxh_OtherOperatingIncomeExpenseAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherOperatingIncomeExpenseAbstract" xlink:to="nyxh_OtherOperatingIncomeExpenseAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherOperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherOperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other operating income and expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SellingGeneralAndAdministrativeExpenseMember" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpenseMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SellingGeneralAndAdministrativeExpenseMember" xlink:to="ifrs-full_SellingGeneralAndAdministrativeExpenseMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, general and administrative expense [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SellingGeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, General and Administrative expenses</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfProvisionsAxis" xlink:label="ifrs-full_ClassesOfProvisionsAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfProvisionsAxis" xlink:to="ifrs-full_ClassesOfProvisionsAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfProvisionsAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of other provisions [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfOtherProvisionsDomain" xlink:label="ifrs-full_ClassesOfOtherProvisionsDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ClassesOfOtherProvisionsDomain" xlink:to="ifrs-full_ClassesOfOtherProvisionsDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ClassesOfOtherProvisionsDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of other provisions [domain]</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ConstructiveObligationMember" xlink:label="nyxh_ConstructiveObligationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ConstructiveObligationMember" xlink:to="nyxh_ConstructiveObligationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ConstructiveObligationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for constructive obligation.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ConstructiveObligationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Constructive Obligation [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ConstructiveObligationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Constructive obligation</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_LegalFeesExpense" xlink:label="nyxh_LegalFeesExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_LegalFeesExpense" xlink:to="nyxh_LegalFeesExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_LegalFeesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of legal fees expense.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_LegalFeesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Legal Fees Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_LegalFeesExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Legal fees</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses" xlink:label="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses" xlink:to="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT costs included within selling, general and administrative expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Information technology expense Selling General And Administrative Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_InformationTechnologyExpenseSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IT</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InsuranceExpense" xlink:label="ifrs-full_InsuranceExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InsuranceExpense" xlink:to="ifrs-full_InsuranceExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InsuranceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Insurance expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InsuranceExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Insurance fees</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:label="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:to="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment loss (reversal of impairment loss) recognised in profit or loss, trade receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTradeReceivables_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Impairment loss on trade receivables</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems" xlink:label="nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems" xlink:to="nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of general and administrative expenses [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DisclosureOfGeneralAndAdministrativeExpensesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, General and Administrative expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xlink:label="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xlink:to="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in selling general and administrative expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Selling General And Administrative Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_IncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in selling general and administrative expenses</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xlink:label="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses" xlink:to="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage of increase (decrease) in selling, general and administrative expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage Increase Decrease In Selling General And Administrative Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PercentageIncreaseDecreaseInSellingGeneralAndAdministrativeExpenses_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Percentage increase (decrease) in selling, general and administrative expenses.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CapitalizationOfResearchAndDevelopmentIncentive" xlink:label="nyxh_CapitalizationOfResearchAndDevelopmentIncentive" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CapitalizationOfResearchAndDevelopmentIncentive" xlink:to="nyxh_CapitalizationOfResearchAndDevelopmentIncentive_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CapitalizationOfResearchAndDevelopmentIncentive_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of capitalization of R&amp;D incentive is classified as other operating income and loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CapitalizationOfResearchAndDevelopmentIncentive_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalization of R&amp;D incentive</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CapitalizationOfResearchAndDevelopmentIncentive_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalization of R&amp;D incentive</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement" xlink:label="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement" xlink:to="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of initial measurement and re-measurement included in other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Operating Income (Expense), Initial Measurement and Re-measurement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherOperatingIncomeExpenseInitialMeasurementAndReMeasurement_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances Initial measurement and re-measurement</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives" xlink:label="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives" xlink:to="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of research and development included in other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Operating Income (Expense), Research and Development Incentives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherOperatingIncomeExpenseResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">R&amp;D incentives</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives" xlink:label="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives" xlink:to="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of capitalization research and development included in other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Operating Income (Expense), Capitalization of Research and Development Incentives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherOperatingIncomeExpenseCapitalizationOfResearchAndDevelopmentIncentives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Capitalization of R&amp;D incentive</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense" xlink:label="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense" xlink:to="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of income (expense) included in other operating income (expense).</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Operating Income (Expense), Miscellaneous Income (Expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherOperatingIncomeExpenseMiscellaneousIncomeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other income/(expenses)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WagesAndSalaries" xlink:label="ifrs-full_WagesAndSalaries" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WagesAndSalaries" xlink:to="ifrs-full_WagesAndSalaries_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WagesAndSalaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">wages and salaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WagesAndSalaries_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Salaries</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SocialSecurityContributions" xlink:label="ifrs-full_SocialSecurityContributions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_SocialSecurityContributions" xlink:to="ifrs-full_SocialSecurityContributions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_SocialSecurityContributions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Social security contributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_SocialSecurityContributions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Social charges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss" xlink:to="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post-employment benefit expense in profit or loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_PostemploymentBenefitExpenseInProfitOrLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pension charges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees" xlink:to="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Expense from share based payment transactions with employees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ExpenseFromSharebasedPaymentTransactionsWithEmployees_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherEmployeeExpense" xlink:label="ifrs-full_OtherEmployeeExpense" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherEmployeeExpense" xlink:to="ifrs-full_OtherEmployeeExpense_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherEmployeeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other employee expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherEmployeeExpense_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SellingGeneralAndAdministrativeExpensesMemberMember" xlink:label="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember" xlink:to="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Selling, General And Administrative Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, General And Administrative Expenses member [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SellingGeneralAndAdministrativeExpensesMemberMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Selling, general and administrative expenses.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ClassesOfEmployeeBenefitsExpenseLineItems" xlink:label="nyxh_ClassesOfEmployeeBenefitsExpenseLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ClassesOfEmployeeBenefitsExpenseLineItems" xlink:to="nyxh_ClassesOfEmployeeBenefitsExpenseLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ClassesOfEmployeeBenefitsExpenseLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Classes of employee benefits expense [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ClassesOfEmployeeBenefitsExpenseLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Employee benefits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromInterest" xlink:label="ifrs-full_RevenueFromInterest" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RevenueFromInterest" xlink:to="ifrs-full_RevenueFromInterest_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RevenueFromInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_RevenueFromInterest_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForeignExchangeGain" xlink:label="ifrs-full_ForeignExchangeGain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ForeignExchangeGain" xlink:to="ifrs-full_ForeignExchangeGain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange gain</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange differences</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange gains</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards." xlink:label="nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards." xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards." xlink:to="nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards._lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value adjustment on foreign currency swaps and forwards.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FairValueAdjustmentForeignCurrencySwapsAndForwards._lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Adjustment Foreign Currency Swaps And Forwards.</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants" xlink:to="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of gain (loss) on change in fair value adjustments of synthetic warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gain (Loss) On Change In Fair Value Adjustments of Synthetic Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment synthetic warrants</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption" xlink:to="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of gain (loss) on change in fair value adjustments of prepayment options.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gain (Loss) On Change In Fair Value Adjustments of Prepayment Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_GainLossOnChangeInFairValueAdjustmentsOfPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment prepayment option</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinanceIncomeCost" xlink:label="ifrs-full_OtherFinanceIncomeCost" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_OtherFinanceIncomeCost" xlink:to="ifrs-full_OtherFinanceIncomeCost_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_OtherFinanceIncomeCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other finance income (cost)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_OtherFinanceIncomeCost_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests" xlink:to="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in interests during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Finance Income Due to Interests</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToInterests_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in interests</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults" xlink:to="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in exchange results during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Finance Income Due to Exchange Results</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in exchange differences</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants" xlink:to="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in increase (decrease) in fair value adjustments of synthetic warrants during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Finance Income Due to Fair Value Adjustment of Synthetic Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in fair adjustment on synthetic warrants</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives" xlink:to="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in increase (decrease) in fair value adjustments of derivatives during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Finance Income Due to Fair Value Adjustment of Derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInFinanceIncomeDueToFairValueAdjustmentOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Decrease in fair value adjustment on foreign currency swaps and forwards</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RealizedForeignExchangeGain" xlink:label="nyxh_RealizedForeignExchangeGain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RealizedForeignExchangeGain" xlink:to="nyxh_RealizedForeignExchangeGain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RealizedForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of unrealized foreign exchange gains.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RealizedForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Realized Foreign Exchange Gain</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_UnrealizedForeignExchangeGain" xlink:label="nyxh_UnrealizedForeignExchangeGain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_UnrealizedForeignExchangeGain" xlink:to="nyxh_UnrealizedForeignExchangeGain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_UnrealizedForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of unrealized foreign exchange gains.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_UnrealizedForeignExchangeGain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unrealized Foreign Exchange Gain</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_DepreciationInForeignExchangeRatePercent" xlink:label="nyxh_DepreciationInForeignExchangeRatePercent" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_DepreciationInForeignExchangeRatePercent" xlink:to="nyxh_DepreciationInForeignExchangeRatePercent_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_DepreciationInForeignExchangeRatePercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The percentage of depreciation in foreign exchange rate.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_DepreciationInForeignExchangeRatePercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation In Foreign Exchange Rate, Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_DepreciationInForeignExchangeRatePercent_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Depreciation of foreign exchange rate (in %)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestIncomeOnDeposits" xlink:label="ifrs-full_InterestIncomeOnDeposits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestIncomeOnDeposits" xlink:to="ifrs-full_InterestIncomeOnDeposits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestIncomeOnDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestIncomeOnDeposits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest income on term accounts</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives" xlink:to="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Gains (losses) on change in fair value of derivatives</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="ifrs-full_GainsLossesOnChangeInFairValueOfDerivatives_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment foreign currency swaps and forwards</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FairValueAdjustmentSyntheticWarrants" xlink:label="nyxh_FairValueAdjustmentSyntheticWarrants" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FairValueAdjustmentSyntheticWarrants" xlink:to="nyxh_FairValueAdjustmentSyntheticWarrants_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FairValueAdjustmentSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value adjustment related to synthetic warrants.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FairValueAdjustmentSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Adjustment Synthetic Warrants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FairValueAdjustmentSyntheticWarrants_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment synthetic warrants</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FairValueAdjustmentPrepaymentOption" xlink:label="nyxh_FairValueAdjustmentPrepaymentOption" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FairValueAdjustmentPrepaymentOption" xlink:to="nyxh_FairValueAdjustmentPrepaymentOption_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FairValueAdjustmentPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value adjustment related to prepayment option.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FairValueAdjustmentPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Adjustment Prepayment Option</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FairValueAdjustmentPrepaymentOption_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment prepayment option</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RecoverableCashAdvancesDiscountingImpact" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpact" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RecoverableCashAdvancesDiscountingImpact" xlink:to="nyxh_RecoverableCashAdvancesDiscountingImpact_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpact_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amount of financial expense which are in nature of discounted recoverable cash advances.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpact_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances discounting impact</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RecoverableCashAdvancesDiscountingImpact_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Recoverable cash advances, Accretion of interest</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BankAndSimilarCharges" xlink:label="ifrs-full_BankAndSimilarCharges" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_BankAndSimilarCharges" xlink:to="ifrs-full_BankAndSimilarCharges_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_BankAndSimilarCharges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Bank and similar charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_BankAndSimilarCharges_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest and bank charges</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:label="ifrs-full_InterestExpenseOnLeaseLiabilities" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:to="ifrs-full_InterestExpenseOnLeaseLiabilities_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_InterestExpenseOnLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest expense on lease liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_InterestExpenseOnLeaseLiabilities_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Interest on lease liabilities</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForeignExchangeLoss" xlink:label="ifrs-full_ForeignExchangeLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ForeignExchangeLoss" xlink:to="ifrs-full_ForeignExchangeLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Foreign exchange loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Exchange differences</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_OtherFinanceCostIncludingAdjustments" xlink:label="nyxh_OtherFinanceCostIncludingAdjustments" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_OtherFinanceCostIncludingAdjustments" xlink:to="nyxh_OtherFinanceCostIncludingAdjustments_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_OtherFinanceCostIncludingAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of finance costs that the entity does not separately disclose in the same statement or note including adjustments.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_OtherFinanceCostIncludingAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other Finance Cost Including Adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_OtherFinanceCostIncludingAdjustments_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Other</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_FairValueAdjustmentConvertibleBonds" xlink:label="nyxh_FairValueAdjustmentConvertibleBonds" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_FairValueAdjustmentConvertibleBonds" xlink:to="nyxh_FairValueAdjustmentConvertibleBonds_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_FairValueAdjustmentConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The fair value adjustment related to convertible bonds.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_FairValueAdjustmentConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair Value Adjustment, Convertible Bonds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_FairValueAdjustmentConvertibleBonds_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Fair value adjustment convertible bond</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults" xlink:label="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults" xlink:to="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in exchange results during the period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) In Finance Expense Due to Exchange Results</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="nyxh_IncreaseDecreaseInFinanceExpenseDueToExchangeResults_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase (Decrease) in finance expense due to changes in exchange results</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond" xlink:label="nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond" xlink:to="nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of increase (decrease) in financial income due to increase (decrease) in amortization day 1 loss convertible bond.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_IncreaseDecreaseInAmortizationDay1LossConvertibleBond_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Increase Decrease In Amortization Day 1 Loss Convertible Bond</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RealizedForeignExchangeLoss" xlink:label="nyxh_RealizedForeignExchangeLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RealizedForeignExchangeLoss" xlink:to="nyxh_RealizedForeignExchangeLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of realized foreign exchange loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Realized Foreign Exchange Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Realized foreign exchange loss</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_UnrealizedForeignExchangeLoss" xlink:label="nyxh_UnrealizedForeignExchangeLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_UnrealizedForeignExchangeLoss" xlink:to="nyxh_UnrealizedForeignExchangeLoss_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_UnrealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">the amount stands for Unrealized Foreign Exchange Loss.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_UnrealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unrealized Foreign Exchange Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_UnrealizedForeignExchangeLoss_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Unrealized Foreign Exchange Loss</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EarningsPerShareTable" xlink:label="ifrs-full_EarningsPerShareTable" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EarningsPerShareTable" xlink:to="ifrs-full_EarningsPerShareTable_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EarningsPerShareTable_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Earnings per share [Table]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EarningsPerShareLineItems" xlink:label="ifrs-full_EarningsPerShareLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_EarningsPerShareLineItems" xlink:to="ifrs-full_EarningsPerShareLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_EarningsPerShareLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Earnings per share [Line items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_EarningsPerShareLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Loss Per Share (EPS)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_StockholdersEquityNoteStockSplitConversionRatio1" xlink:label="nyxh_StockholdersEquityNoteStockSplitConversionRatio1" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_StockholdersEquityNoteStockSplitConversionRatio1" xlink:to="nyxh_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">IFRS Stockholders Equity Note Stock Split Conversion Ratios</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_StockholdersEquityNoteStockSplitConversionRatio1_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share split ratio</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract" xlink:label="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract" xlink:to="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">No definition available.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Preferred Shares Were Converted Into Common Shares And Split Shares [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PreferredSharesWereConvertedIntoCommonSharesAndSplitSharesAbstract_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">As at June 30, after conversion and share split</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WeightedAverageShares" xlink:label="ifrs-full_WeightedAverageShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_WeightedAverageShares" xlink:to="ifrs-full_WeightedAverageShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_WeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_WeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of common shares outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_WeightedAverageShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Weighted average number of common shares outstanding (in units)</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares" xlink:label="ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares" xlink:to="ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Dilutive effect of warrants on weighted average number of ordinary shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DilutiveEffectOfWarrantsOnWeightedAverageNumberOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Potential number of shares resulting from the exercise of warrants</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares" xlink:label="ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares" xlink:to="ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Dilutive effect of convertible instruments on weighted average number of ordinary shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DilutiveEffectOfConvertibleInstrumentsOnNumberOfOrdinaryShares_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Potential number of shares resulting from conversion of the bond</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CommitmentsToSuppliersForGoodsAndServices" xlink:label="nyxh_CommitmentsToSuppliersForGoodsAndServices" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CommitmentsToSuppliersForGoodsAndServices" xlink:to="nyxh_CommitmentsToSuppliersForGoodsAndServices_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CommitmentsToSuppliersForGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The amount of commitment to make progress payments related to manufacturing services and inventory purchases.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CommitmentsToSuppliersForGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Commitments to Suppliers for Goods and Services</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CommitmentsToSuppliersForGoodsAndServices_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Progress payments</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:to="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation short term employee benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Short-term remuneration &amp; compensation</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits" xlink:label="ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits" xlink:to="ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation, post-employment benefits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationPostemploymentBenefits_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Post-employment benefits</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment" xlink:to="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation share based payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share based payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensationSharebasedPayment_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Share-based payment expense for non-executive directors</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensation" xlink:label="ifrs-full_KeyManagementPersonnelCompensation" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelCompensation" xlink:to="ifrs-full_KeyManagementPersonnelCompensation_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ifrs-full_KeyManagementPersonnelCompensation_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:label="ifrs-full_CategoriesOfRelatedPartiesAxis" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:to="ifrs-full_CategoriesOfRelatedPartiesAxis_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfRelatedPartiesAxis_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of related parties [axis]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:label="ifrs-full_CategoriesOfRelatedPartiesDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:to="ifrs-full_CategoriesOfRelatedPartiesDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_CategoriesOfRelatedPartiesDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Categories of related parties [domain]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RelatedPartiesMember" xlink:label="ifrs-full_RelatedPartiesMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_RelatedPartiesMember" xlink:to="ifrs-full_RelatedPartiesMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_RelatedPartiesMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related parties [member]</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember" xlink:to="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Key management personnel of entity or parent [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_KeyManagementPersonnelOfEntityOrParentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Non-Executive Directors</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_CochlearLimitedMember" xlink:label="nyxh_CochlearLimitedMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_CochlearLimitedMember" xlink:to="nyxh_CochlearLimitedMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_CochlearLimitedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Cochlear Limited, or Cochlear, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_CochlearLimitedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cochlear Limited [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_CochlearLimitedMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Cochlear</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RobertTaubAndRobelgaSrlMember" xlink:label="nyxh_RobertTaubAndRobelgaSrlMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RobertTaubAndRobelgaSrlMember" xlink:to="nyxh_RobertTaubAndRobelgaSrlMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RobertTaubAndRobelgaSrlMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Robert Taub and Robelga SRL, related parties.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RobertTaubAndRobelgaSrlMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Robert Taub And Robelga Srl [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RobertTaubAndRobelgaSrlMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Robert Taub (until June 12, 2024)/Robelga SRL (since June 12, 2024)</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_KevinRakinMember" xlink:label="nyxh_KevinRakinMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_KevinRakinMember" xlink:to="nyxh_KevinRakinMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_KevinRakinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Kevin Rakin, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_KevinRakinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Kevin Rakin [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_KevinRakinMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Kevin Rakin</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_PierreGianelloMember" xlink:label="nyxh_PierreGianelloMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_PierreGianelloMember" xlink:to="nyxh_PierreGianelloMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_PierreGianelloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Pierre Gianello, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_PierreGianelloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pierre Gianello [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_PierreGianelloMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Pierre Gianello</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_JurgenHambrechtMember" xlink:label="nyxh_JurgenHambrechtMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_JurgenHambrechtMember" xlink:to="nyxh_JurgenHambrechtMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_JurgenHambrechtMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Jurgen Hambrecht, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_JurgenHambrechtMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jurgen Hambrecht [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_JurgenHambrechtMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Jurgen Hambrecht</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RitaMillsMember" xlink:label="nyxh_RitaMillsMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RitaMillsMember" xlink:to="nyxh_RitaMillsMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_RitaMillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Rita Mills, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RitaMillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Rita Mills [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RitaMillsMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Rita Mills</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_GinyKirbyMember" xlink:label="nyxh_GinyKirbyMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_GinyKirbyMember" xlink:to="nyxh_GinyKirbyMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_GinyKirbyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Giny Kirby, a related party.Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person's family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity. If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer: Joint ventures [member]; Key management personnel of entity or parent [member]]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_GinyKirbyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Giny Kirby [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_GinyKirbyMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Giny Kirby</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_WildmanVenturesLlcMember" xlink:label="nyxh_WildmanVenturesLlcMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_WildmanVenturesLlcMember" xlink:to="nyxh_WildmanVenturesLlcMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_WildmanVenturesLlcMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to Wildman Ventures LLC a related party.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_WildmanVenturesLlcMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Wildman Ventures LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_WildmanVenturesLlcMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Wildman Ventures LLC</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_SetUpOfProductionLineMember" xlink:label="nyxh_SetUpOfProductionLineMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_SetUpOfProductionLineMember" xlink:to="nyxh_SetUpOfProductionLineMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_SetUpOfProductionLineMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to setting up line of production.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_SetUpOfProductionLineMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Set Up Of Production Line [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_SetUpOfProductionLineMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Set up of Production Line</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_BoardRemunerationMember" xlink:label="nyxh_BoardRemunerationMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_BoardRemunerationMember" xlink:to="nyxh_BoardRemunerationMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_BoardRemunerationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">This member stands for activity related to board remuneration.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_BoardRemunerationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Board Remuneration [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_BoardRemunerationMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Board Remuneration</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:to="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Disclosure of transactions between related parties [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related Party Transactions</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:label="ifrs-full_ServicesReceivedRelatedPartyTransactions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ServicesReceivedRelatedPartyTransactions" xlink:to="ifrs-full_ServicesReceivedRelatedPartyTransactions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ServicesReceivedRelatedPartyTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Services received related party transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ServicesReceivedRelatedPartyTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Collaboration agreements led to financial impact</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ifrs-full_ServicesReceivedRelatedPartyTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related party transaction, Total</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AmountsPayableRelatedPartyTransactions" xlink:label="ifrs-full_AmountsPayableRelatedPartyTransactions" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_AmountsPayableRelatedPartyTransactions" xlink:to="ifrs-full_AmountsPayableRelatedPartyTransactions_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_AmountsPayableRelatedPartyTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Amounts payable, related party transactions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_AmountsPayableRelatedPartyTransactions_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related party, Amounts outstanding at period-end</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_ClassOfWarrantsOrRightDomain" xlink:label="nyxh_ClassOfWarrantsOrRightDomain" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_ClassOfWarrantsOrRightDomain" xlink:to="nyxh_ClassOfWarrantsOrRightDomain_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="nyxh_ClassOfWarrantsOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">The class of warrants or right.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_ClassOfWarrantsOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Class Of Warrants Or Right [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_ClassOfWarrantsOrRightDomain_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Warrant</label>
    <loc xlink:type="locator" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember" xlink:label="ifrs-full_ConstructionInProgressMember" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ifrs-full_ConstructionInProgressMember" xlink:to="ifrs-full_ConstructionInProgressMember_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ifrs-full_ConstructionInProgressMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Construction in progress [member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ifrs-full_ConstructionInProgressMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Construction in progress</label>
    <loc xlink:type="locator" xlink:href="nyxh-20260630.xsd#nyxh_RemunerationOfKeyManagementLineItems" xlink:label="nyxh_RemunerationOfKeyManagementLineItems" xmlns="http://www.xbrl.org/2003/linkbase" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="nyxh_RemunerationOfKeyManagementLineItems" xlink:to="nyxh_RemunerationOfKeyManagementLineItems_lbl" xmlns="http://www.xbrl.org/2003/linkbase" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="nyxh_RemunerationOfKeyManagementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Remuneration of key management line items</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="nyxh_RemunerationOfKeyManagementLineItems_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Related Party Transactions</label>
  </link:labelLink>
</link:linkbase>
