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  <xsd:element id="amph_IncreaseDecreaseInIncomeTaxRefundDepositsAndPayable" name="IncreaseDecreaseInIncomeTaxRefundDepositsAndPayable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="amph_AccruedCustomerFeesAndRebates" name="AccruedCustomerFeesAndRebates" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_PrimatenemistMember" name="PrimatenemistMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_FrenchGovernmentLoan4DueDecember2026Member" name="FrenchGovernmentLoan4DueDecember2026Member" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_LeaseLiabilityMaturityTableTextBlock" name="LeaseLiabilityMaturityTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="amph_FinanceLeaseCost" name="FinanceLeaseCost" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="amph_LeaseLiability" name="LeaseLiability" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LesseeOperatingLeaseLiabilityPaymentsAbstract" name="LesseeOperatingLeaseLiabilityPaymentsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_LesseeFinanceLeaseLiabilityPaymentsAbstract" name="LesseeFinanceLeaseLiabilityPaymentsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_LesseeLeaseLiabilityPaymentsAbstract" name="LesseeLeaseLiabilityPaymentsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDueYearTwo" name="LeaseLiabilityPaymentsDueYearTwo" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDueYearThree" name="LeaseLiabilityPaymentsDueYearThree" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDueYearFour" name="LeaseLiabilityPaymentsDueYearFour" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDue" name="LeaseLiabilityPaymentsDue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LeaseLiabilityUndiscountedExcessAmount" name="LeaseLiabilityUndiscountedExcessAmount" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDueAfterYearFive" name="LeaseLiabilityPaymentsDueAfterYearFive" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_OperatingLeaseRightOfUseAssetsAndLiabilitiesNet" name="OperatingLeaseRightOfUseAssetsAndLiabilitiesNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="amph_NoncashOperatingLeaseRightOfUseAsset" name="NoncashOperatingLeaseRightOfUseAsset" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="amph_RestrictedShortTermInvestmentsPolicyTextBlock" name="RestrictedShortTermInvestmentsPolicyTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="amph_StockIssuedDuringPeriodValueEquityPlans" name="StockIssuedDuringPeriodValueEquityPlans" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="amph_NanjingHanxinPharmaceuticalTechnologyCoLtdMember" name="NanjingHanxinPharmaceuticalTechnologyCoLtdMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_LeaseLiabilityPaymentsDueNextTwelveMonths" name="LeaseLiabilityPaymentsDueNextTwelveMonths" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="amph_EmployeeLitigationV.InternationalMedicationSystemsLimitedMember" name="EmployeeLitigationV.InternationalMedicationSystemsLimitedMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_RevenuePerformanceObligationPaymentTerms" name="RevenuePerformanceObligationPaymentTerms" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="amph_GlucagonMember" name="GlucagonMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="amph_OwnershipPercentageAfterSpinoffTransaction" name="OwnershipPercentageAfterSpinoffTransaction" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="CorporateBondsShortTermMember" id="amph_CorporateBondsShortTermMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ResearchAndDevelopmentServicesMember" id="amph_ResearchAndDevelopmentServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ScheduleOfProvisionForChargebacksAndRebatesAmountsRecognizedInBalanceSheetTableTextBlock" id="amph_ScheduleOfProvisionForChargebacksAndRebatesAmountsRecognizedInBalanceSheetTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="GainLossFromChangeInFairValueOfInterestRateCashFlowHedges" id="amph_GainLossFromChangeInFairValueOfInterestRateCashFlowHedges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BaqsimiAcquisitionsMember" id="amph_BaqsimiAcquisitionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionContingentConsiderationThresholdAnnualSalesMilestone" id="amph_AssetAcquisitionContingentConsiderationThresholdAnnualSalesMilestone" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AssetAcquisitionContingentConsiderationPeriodAfterClosingConsideredForAchievementOfSalesMilestone" id="amph_AssetAcquisitionContingentConsiderationPeriodAfterClosingConsideredForAchievementOfSalesMilestone" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AssetAcquisitionContingentConsiderationPayableOnAchievementOfSalesMilestoneThresholdNumber" id="amph_AssetAcquisitionContingentConsiderationPayableOnAchievementOfSalesMilestoneThresholdNumber" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AssetAcquisitionContingentConsiderationSalesMilestoneAchievementOneMember" id="amph_AssetAcquisitionContingentConsiderationSalesMilestoneAchievementOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionContingentConsiderationSalesMilestoneAchievementTwoMember" id="amph_AssetAcquisitionContingentConsiderationSalesMilestoneAchievementTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionContingentConsiderationSalesMilestoneAchievementThreeMember" id="amph_AssetAcquisitionContingentConsiderationSalesMilestoneAchievementThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionContingentConsiderationThresholdCumulativeSalesMilestone" id="amph_AssetAcquisitionContingentConsiderationThresholdCumulativeSalesMilestone" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AssetAcquisitionThresholdEarnoutLiabilityAssumed" id="amph_AssetAcquisitionThresholdEarnoutLiabilityAssumed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AssetAcquisitionEarnoutLiabilityThresholdAnnualSalesMilestone" id="amph_AssetAcquisitionEarnoutLiabilityThresholdAnnualSalesMilestone" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementOneMember" id="amph_AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementTwoMember" id="amph_AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementThreeMember" id="amph_AssetAcquisitionEarnoutLiabilitySalesMilestoneAchievementThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WellsFargoBankMember" id="amph_WellsFargoBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TermLoanDueJune2028Member" id="amph_TermLoanDueJune2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ConvertibleDebtPolicyTextBlock" id="amph_ConvertibleDebtPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock" id="amph_DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DebtInstrumentConvertiblePremiumPercentageOverLastReportedSalePricePercent" id="amph_DebtInstrumentConvertiblePremiumPercentageOverLastReportedSalePricePercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember" id="amph_TwoPercentConvertibleSeniorNotesDueTwoThousandTwentyNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BaqsimiMember" id="amph_BaqsimiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentConvertibleThresholdBusinessDaysAfterConsecutiveTradingPeriod" id="amph_DebtInstrumentConvertibleThresholdBusinessDaysAfterConsecutiveTradingPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DebtInstrumentConvertibleThresholdConsecutiveTradingPeriod" id="amph_DebtInstrumentConvertibleThresholdConsecutiveTradingPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DebtInstrumentConvertibleThresholdTradingPriceAsPercentageOfProductOfSalePriceOfCommonStockAndConversionRate" id="amph_DebtInstrumentConvertibleThresholdTradingPriceAsPercentageOfProductOfSalePriceOfCommonStockAndConversionRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CencoraMember" id="amph_CencoraMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ICBCBankMember" id="amph_ICBCBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LineOfCreditDueNovember2033Member" id="amph_LineOfCreditDueNovember2033Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DebtInstrumentBasisSpreadDiscountOnVariableRate" id="amph_DebtInstrumentBasisSpreadDiscountOnVariableRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="GenreachMember" id="amph_GenreachMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherProductsMember" id="amph_OtherProductsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PharmaceuticalProductsSegmentMember" id="amph_PharmaceuticalProductsSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaterialsAndSuppliesExpense" id="amph_MaterialsAndSuppliesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ClinicalTrialsExpense" id="amph_ClinicalTrialsExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ConsultingAndOutsideServicesExpense" id="amph_ConsultingAndOutsideServicesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CouponInterestExpense" id="amph_CouponInterestExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MonthlyLeasePayments" id="amph_MonthlyLeasePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="AnnualLeasePaymentIncreasePercentage" id="amph_AnnualLeasePaymentIncreasePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="NumberOfAnnualPeriods" id="amph_NumberOfAnnualPeriods" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="LicensingAgreementMember" id="amph_LicensingAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NanjingAnjiBiotechnologyCo.Ltd.Member" id="amph_NanjingAnjiBiotechnologyCo.Ltd.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DevelopmentMilestonePaymentsMember" id="amph_DevelopmentMilestonePaymentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SalesMilestonePaymentsMember" id="amph_SalesMilestonePaymentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfLicensedProducts" id="amph_NumberOfLicensedProducts" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NanjingChengongPharmaceuticalCo.LimitedMember" id="amph_NanjingChengongPharmaceuticalCo.LimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionContingentConsiderationThresholdCumulativeDevelopmentMilestone" id="amph_AssetAcquisitionContingentConsiderationThresholdCumulativeDevelopmentMilestone" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="RoyaltyPaymentPercentage" id="amph_RoyaltyPaymentPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="WilliamJPetersMember" id="amph_WilliamJPetersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingLeaseIncrementalBorrowingRate" id="amph_OperatingLeaseIncrementalBorrowingRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfLeasesOtherInformationTableTextBlock" id="amph_ScheduleOfLeasesOtherInformationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LeaseLiabilityPaymentsRemainderOfFiscalYear" id="amph_LeaseLiabilityPaymentsRemainderOfFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
</xsd:schema>
