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  <xs:element id="espr_LiabilityFromSaleOfFutureRevenuesTable" abstract="true" name="LiabilityFromSaleOfFutureRevenuesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="espr_FuturePaymentMilestoneAchievementOfDrugTrialOutcomesStudies" abstract="false" name="FuturePaymentMilestoneAchievementOfDrugTrialOutcomesStudies" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="espr_NonCashInterestExpenseRelatedToRevenueInterestLiability" abstract="false" name="NonCashInterestExpenseRelatedToRevenueInterestLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_ConcentrationRiskNumberOfMajorCustomers" abstract="false" name="ConcentrationRiskNumberOfMajorCustomers" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="espr_EigerIiiSaLlcMember" abstract="true" name="EigerIiiSaLlcMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_LiabilityRelatedToRevenueInterestPurchaseAgreementAbstract" abstract="true" name="LiabilityRelatedToRevenueInterestPurchaseAgreementAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="espr_AggregateAmountOfPotentialFutureRevenueTotalDevelopmentAndSalesMilestones" abstract="false" name="AggregateAmountOfPotentialFutureRevenueTotalDevelopmentAndSalesMilestones" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_LeaseBalanceSheetDisclosureTableTextBlock" abstract="false" name="LeaseBalanceSheetDisclosureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="espr_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockPlanOfferingPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardStockPlanOfferingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="espr_HypotheticalRepaymentObligationBasedOnSalesGenerated" abstract="false" name="HypotheticalRepaymentObligationBasedOnSalesGenerated" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_DaiichiSankyoEuropeGmbhMember" abstract="true" name="DaiichiSankyoEuropeGmbhMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_FutureUpFrontPayment" abstract="false" name="FutureUpFrontPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_AtTheMarketProgramMember" abstract="true" name="AtTheMarketProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_AmountOfSubsequentInstallmentSubjectToRevenueInterestPurchaseAgreementTermsAndConditions" abstract="false" name="AmountOfSubsequentInstallmentSubjectToRevenueInterestPurchaseAgreementTermsAndConditions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_FairValueMeasurementLiabilityTransfersBetweenLevels" abstract="false" name="FairValueMeasurementLiabilityTransfersBetweenLevels" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_SaleOfStockUnderwriterOptionPeriod" abstract="false" name="SaleOfStockUnderwriterOptionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="espr_FuturePaymentMilestoneFirstNationalHealthInsurancePriceListingOtsukaTerritory" abstract="false" name="FuturePaymentMilestoneFirstNationalHealthInsurancePriceListingOtsukaTerritory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_NumberOfBusinessDays" abstract="false" name="NumberOfBusinessDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="espr_GrossProceedsFromRevenueInterestPurchaseAgreement" abstract="false" name="GrossProceedsFromRevenueInterestPurchaseAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_CommitmentOfferingMember" abstract="true" name="CommitmentOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_RoyaltyRevenueFromDSEAndSaleOfBulkTabletsMember" abstract="true" name="RoyaltyRevenueFromDSEAndSaleOfBulkTabletsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_RevenueInterestPurchaseAgreementAmendmentMember" abstract="true" name="RevenueInterestPurchaseAgreementAmendmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_LiabilityFromSaleOfFutureRevenuesRollForward" abstract="true" name="LiabilityFromSaleOfFutureRevenuesRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="espr_UnvestedRestrictedStockAndRestrictedStockUnitsMember" abstract="true" name="UnvestedRestrictedStockAndRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_PercentageOfIncreaseInRoyaltyRateUponDrawdownOfThirdPayment" abstract="false" name="PercentageOfIncreaseInRoyaltyRateUponDrawdownOfThirdPayment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_ShareBasedPaymentArrangementOptionPerformanceBasedMember" abstract="true" name="ShareBasedPaymentArrangementOptionPerformanceBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_MinimumAmountOfAnnualNetSalesToQualifyForReducedRevenueInterestRateContingentThreshold" abstract="false" name="MinimumAmountOfAnnualNetSalesToQualifyForReducedRevenueInterestRateContingentThreshold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_PaymentForOtherIssuanceCosts" abstract="false" name="PaymentForOtherIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_PaymentsForRevenueInterestLiabilityIssuanceCosts" abstract="false" name="PaymentsForRevenueInterestLiabilityIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_RevenueInterestLiabilityIncreaseForInterestExpenseRecognized" abstract="false" name="RevenueInterestLiabilityIncreaseForInterestExpenseRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_StockOptionAndIncentivePlan2013Member" abstract="true" name="StockOptionAndIncentivePlan2013Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_RevenueInterestPurchaseAgreementMember" abstract="true" name="RevenueInterestPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorizedAsPercentageOfSharesIssuedAndOutstanding" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorizedAsPercentageOfSharesIssuedAndOutstanding" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_SaleOfStockAuthorizedAmount" abstract="false" name="SaleOfStockAuthorizedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_CollaborativeArrangementLicenseToIntellectualPropertyMember" abstract="true" name="CollaborativeArrangementLicenseToIntellectualPropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAggregateIntrinsicValueAbstract" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAggregateIntrinsicValueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="espr_CommonStockIssuanceCostsIncurred" abstract="false" name="CommonStockIssuanceCostsIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_ProceedsFromIssuanceOfCommonStockAndWarrants" abstract="false" name="ProceedsFromIssuanceOfCommonStockAndWarrants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_RevenueInterestRepaymentObligationAmountExpectedInNextTwelveMonths" abstract="false" name="RevenueInterestRepaymentObligationAmountExpectedInNextTwelveMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_TrailingNumberOfMonthsSalesMustBeAtOrAboveMilestoneAmount" abstract="false" name="TrailingNumberOfMonthsSalesMustBeAtOrAboveMilestoneAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="espr_PercentageOfRoyaltiesToBeReceivedOnNetSales" abstract="false" name="PercentageOfRoyaltiesToBeReceivedOnNetSales" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_RevenueInterestLiabilityNoncurrent" abstract="false" name="RevenueInterestLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_SerometrixMember" abstract="true" name="SerometrixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_InducementEquityPlanPlan2017Member" abstract="true" name="InducementEquityPlanPlan2017Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_DeferredTaxAssetsTaxDeferredExpenseCapitalizedResearchAndDevelopment" abstract="false" name="DeferredTaxAssetsTaxDeferredExpenseCapitalizedResearchAndDevelopment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_ProceedsFromRevenueInterestPurchaseAgreement" abstract="false" name="ProceedsFromRevenueInterestPurchaseAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_NumberOfConsecutiveTradingDays" abstract="false" name="NumberOfConsecutiveTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="espr_RevenueInterestRateInitialRate" abstract="false" name="RevenueInterestRateInitialRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_PercentageOfRevenueInterestsPaymentOnWhichAgreementTerminatesAfterThirdAnniversaryOfClosingDateIfPutOptionIsExercised" abstract="false" name="PercentageOfRevenueInterestsPaymentOnWhichAgreementTerminatesAfterThirdAnniversaryOfClosingDateIfPutOptionIsExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_ScheduleOfRevenueInterestLiabilityTableTextBlock" abstract="false" name="ScheduleOfRevenueInterestLiabilityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="espr_NumberOfSourcesOfRevenue" abstract="false" name="NumberOfSourcesOfRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="espr_SaleOfStockMaximumValueOfSharesIssuedInTransaction" abstract="false" name="SaleOfStockMaximumValueOfSharesIssuedInTransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_SaleOfStockOptionToPurchaseAdditionalSharesNumberOfShares" abstract="false" name="SaleOfStockOptionToPurchaseAdditionalSharesNumberOfShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="espr_ExclusiveDevelopmentalActivitiesMember" abstract="true" name="ExclusiveDevelopmentalActivitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_FuturePaymentMilestoneSalesMilestones" abstract="false" name="FuturePaymentMilestoneSalesMilestones" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_LiabilityFromSaleOfFutureRevenuesLineItems" abstract="true" name="LiabilityFromSaleOfFutureRevenuesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="espr_AmountOfSubsequentInstallmentSubjectToRegulatoryApproval" abstract="false" name="AmountOfSubsequentInstallmentSubjectToRegulatoryApproval" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_AccruedClinicalDevelopmentCostsCurrent" abstract="false" name="AccruedClinicalDevelopmentCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_CappedCallMember" abstract="true" name="CappedCallMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_PercentageOfInvestedCapitalReceivedByDecember312024ToQualifyForSecondReducedRevenueInterestRate" abstract="false" name="PercentageOfInvestedCapitalReceivedByDecember312024ToQualifyForSecondReducedRevenueInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_PropertyAndEquipmentMember" abstract="true" name="PropertyAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_RevenueInterestLiabilityCurrent" abstract="false" name="RevenueInterestLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_DebtInstrumentCovenantRequiredAmountOutstanding" abstract="false" name="DebtInstrumentCovenantRequiredAmountOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_NetSalesThresholdOneMember" abstract="true" name="NetSalesThresholdOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="espr_RevenueInterestPurchaseAgreementEffectiveAnnualImputedInterestRate" abstract="false" name="RevenueInterestPurchaseAgreementEffectiveAnnualImputedInterestRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="espr_UpFrontPayment" abstract="false" name="UpFrontPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="espr_HypotheticalSalesGeneratedAmount" abstract="false" name="HypotheticalSalesGeneratedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
