<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:901c109a-d68f-41ec-880d-67978ab88305,g:ed12f89f-b99e-48a4-98b8-6e95851801b5-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:cpix="http://www.cumberlandpharma.com/20251231" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt-types="http://fasb.org/srt-types/2025" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.cumberlandpharma.com/20251231">
  <xs:import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd"/>
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2025" schemaLocation="https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cpix-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cpix-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cpix-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cpix-20251231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://www.cumberlandpharma.com/role/CoverPage">
        <link:definition>0000001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AuditInformation" roleURI="http://www.cumberlandpharma.com/role/AuditInformation">
        <link:definition>0000002 - Document - Audit Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.cumberlandpharma.com/role/ConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.cumberlandpharma.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>9952152 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofOperations" roleURI="http://www.cumberlandpharma.com/role/ConsolidatedStatementsofOperations">
        <link:definition>9952153 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.cumberlandpharma.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>9952154 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofEquity" roleURI="http://www.cumberlandpharma.com/role/ConsolidatedStatementsofEquity">
        <link:definition>9952155 - Statement - Consolidated Statements of Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ValuationandQualifyingAccounts" roleURI="http://www.cumberlandpharma.com/role/ValuationandQualifyingAccounts">
        <link:definition>9952156 - Statement - Valuation and Qualifying Accounts</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Organization" roleURI="http://www.cumberlandpharma.com/role/Organization">
        <link:definition>9952157 - Disclosure - Organization</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPolicies" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPolicies">
        <link:definition>9952158 - Disclosure - Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VibativSancusoandRediTrexProducts" roleURI="http://www.cumberlandpharma.com/role/VibativSancusoandRediTrexProducts">
        <link:definition>9952159 - Disclosure - Vibativ&#174;, Sancuso&#174; and RediTrex&#174; Products</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenues" roleURI="http://www.cumberlandpharma.com/role/Revenues">
        <link:definition>9952160 - Disclosure - Revenues</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNet" roleURI="http://www.cumberlandpharma.com/role/InventoriesNet">
        <link:definition>9952161 - Disclosure - Inventories, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipment" roleURI="http://www.cumberlandpharma.com/role/PropertyandEquipment">
        <link:definition>9952162 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwill" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwill">
        <link:definition>9952163 - Disclosure - Intangible Assets and Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherCurrentandOtherLongtermLiabilities" roleURI="http://www.cumberlandpharma.com/role/OtherCurrentandOtherLongtermLiabilities">
        <link:definition>9952164 - Disclosure - Other Current and Other Long-term Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.cumberlandpharma.com/role/Debt">
        <link:definition>9952165 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquity" roleURI="http://www.cumberlandpharma.com/role/ShareholdersEquity">
        <link:definition>9952166 - Disclosure - Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LossPerShare" roleURI="http://www.cumberlandpharma.com/role/LossPerShare">
        <link:definition>9952167 - Disclosure - Loss Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxes">
        <link:definition>9952168 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlans" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlans">
        <link:definition>9952169 - Disclosure - Stock-Based Compensation Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlans" roleURI="http://www.cumberlandpharma.com/role/EmployeeBenefitPlans">
        <link:definition>9952170 - Disclosure - Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.cumberlandpharma.com/role/Leases">
        <link:definition>9952171 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MarketConcentrations" roleURI="http://www.cumberlandpharma.com/role/MarketConcentrations">
        <link:definition>9952172 - Disclosure - Market Concentrations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ManufacturingandSupplyAgreements" roleURI="http://www.cumberlandpharma.com/role/ManufacturingandSupplyAgreements">
        <link:definition>9952173 - Disclosure - Manufacturing and Supply Agreements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmploymentAgreements" roleURI="http://www.cumberlandpharma.com/role/EmploymentAgreements">
        <link:definition>9952174 - Disclosure - Employment Agreements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.cumberlandpharma.com/role/CommitmentsandContingencies">
        <link:definition>9952175 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialInformationUnaudited" roleURI="http://www.cumberlandpharma.com/role/QuarterlyFinancialInformationUnaudited">
        <link:definition>9952176 - Disclosure - Quarterly Financial Information (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReporting" roleURI="http://www.cumberlandpharma.com/role/SegmentReporting">
        <link:definition>9952177 - Disclosure - Segment Reporting</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesPolicies" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesTables" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesTables">
        <link:definition>9955512 - Disclosure - Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VibativSancusoandRediTrexProductsTables" roleURI="http://www.cumberlandpharma.com/role/VibativSancusoandRediTrexProductsTables">
        <link:definition>9955513 - Disclosure - Vibativ&#174;, Sancuso&#174; and RediTrex&#174; Products (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesTables" roleURI="http://www.cumberlandpharma.com/role/RevenuesTables">
        <link:definition>9955514 - Disclosure - Revenues (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetTables" roleURI="http://www.cumberlandpharma.com/role/InventoriesNetTables">
        <link:definition>9955515 - Disclosure - Inventories, Net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentTables" roleURI="http://www.cumberlandpharma.com/role/PropertyandEquipmentTables">
        <link:definition>9955516 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillTables" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwillTables">
        <link:definition>9955517 - Disclosure - Intangible Assets and Goodwill (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherCurrentandOtherLongtermLiabilitiesTables" roleURI="http://www.cumberlandpharma.com/role/OtherCurrentandOtherLongtermLiabilitiesTables">
        <link:definition>9955518 - Disclosure - Other Current and Other Long-term Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LossPerShareTables" roleURI="http://www.cumberlandpharma.com/role/LossPerShareTables">
        <link:definition>9955519 - Disclosure - Loss Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesTables">
        <link:definition>9955520 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansTables" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlansTables">
        <link:definition>9955521 - Disclosure - Stock-Based Compensation Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.cumberlandpharma.com/role/LeasesTables">
        <link:definition>9955522 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MarketConcentrationsTables" roleURI="http://www.cumberlandpharma.com/role/MarketConcentrationsTables">
        <link:definition>9955523 - Disclosure - Market Concentrations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialInformationUnauditedTables" roleURI="http://www.cumberlandpharma.com/role/QuarterlyFinancialInformationUnauditedTables">
        <link:definition>9955524 - Disclosure - Quarterly Financial Information (Unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingTables" roleURI="http://www.cumberlandpharma.com/role/SegmentReportingTables">
        <link:definition>9955525 - Disclosure - Segment Reporting (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationDetails" roleURI="http://www.cumberlandpharma.com/role/OrganizationDetails">
        <link:definition>9955526 - Disclosure - Organization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesNarrativeDetails">
        <link:definition>9955527 - Disclosure - Significant Accounting Policies (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesScheduleofDistributionCostsDetails" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesScheduleofDistributionCostsDetails">
        <link:definition>9955528 - Disclosure - Significant Accounting Policies (Schedule of Distribution Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesScheduleofAdvertisingCostsDetails" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesScheduleofAdvertisingCostsDetails">
        <link:definition>9955529 - Disclosure - Significant Accounting Policies (Schedule of Advertising Costs) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesCollaborativeArrangementDetails" roleURI="http://www.cumberlandpharma.com/role/SignificantAccountingPoliciesCollaborativeArrangementDetails">
        <link:definition>9955530 - Disclosure - Significant Accounting Policies (Collaborative Arrangement) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VibativSancusoandRediTrexProductsNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/VibativSancusoandRediTrexProductsNarrativeDetails">
        <link:definition>9955531 - Disclosure - Vibativ&#174;, Sancuso&#174; and RediTrex&#174; Products (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="VibativSancusoandRediTrexProductsChangesInFairValueOfContingentConsiderationLiabilityDetails" roleURI="http://www.cumberlandpharma.com/role/VibativSancusoandRediTrexProductsChangesInFairValueOfContingentConsiderationLiabilityDetails">
        <link:definition>9955532 - Disclosure - Vibativ&#174;, Sancuso&#174; and RediTrex&#174; Products (Changes In Fair Value Of Contingent Consideration Liability) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesScheduleofNetProductRevenuesbyProductDetails" roleURI="http://www.cumberlandpharma.com/role/RevenuesScheduleofNetProductRevenuesbyProductDetails">
        <link:definition>9955533 - Disclosure - Revenues (Schedule of Net Product Revenues by Product) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuesNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/RevenuesNarrativeDetails">
        <link:definition>9955534 - Disclosure - Revenues (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetScheduleofInventoriesDetails" roleURI="http://www.cumberlandpharma.com/role/InventoriesNetScheduleofInventoriesDetails">
        <link:definition>9955535 - Disclosure - Inventories, Net (Schedule of Inventories) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetScheduleofNoncurrentInventoriesDetails" roleURI="http://www.cumberlandpharma.com/role/InventoriesNetScheduleofNoncurrentInventoriesDetails">
        <link:definition>9955536 - Disclosure - Inventories, Net (Schedule of Noncurrent Inventories) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesNetNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/InventoriesNetNarrativeDetails">
        <link:definition>9955537 - Disclosure - Inventories, Net (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentScheduleofPropertyandEquipmentDetails" roleURI="http://www.cumberlandpharma.com/role/PropertyandEquipmentScheduleofPropertyandEquipmentDetails">
        <link:definition>9955538 - Disclosure - Property and Equipment (Schedule of Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentDepreciationExpenseDetails" roleURI="http://www.cumberlandpharma.com/role/PropertyandEquipmentDepreciationExpenseDetails">
        <link:definition>9955539 - Disclosure - Property and Equipment (Depreciation Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillScheduleofIntangibleAssetsDetails" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwillScheduleofIntangibleAssetsDetails">
        <link:definition>9955540 - Disclosure - Intangible Assets and Goodwill (Schedule of Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwillNarrativeDetails">
        <link:definition>9955541 - Disclosure - Intangible Assets and Goodwill (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillAmortizationExpenseDetails" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwillAmortizationExpenseDetails">
        <link:definition>9955542 - Disclosure - Intangible Assets and Goodwill (Amortization Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillFutureAmortizationExpenseDetails" roleURI="http://www.cumberlandpharma.com/role/IntangibleAssetsandGoodwillFutureAmortizationExpenseDetails">
        <link:definition>9955543 - Disclosure - Intangible Assets and Goodwill (Future Amortization Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherCurrentandOtherLongtermLiabilitiesScheduleofOtherCurrentLiabilitiesDetails" roleURI="http://www.cumberlandpharma.com/role/OtherCurrentandOtherLongtermLiabilitiesScheduleofOtherCurrentLiabilitiesDetails">
        <link:definition>9955544 - Disclosure - Other Current and Other Long-term Liabilities (Schedule of Other Current Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherCurrentandOtherLongtermLiabilitiesScheduleofNoncurrentLiabilitiesDetails" roleURI="http://www.cumberlandpharma.com/role/OtherCurrentandOtherLongtermLiabilitiesScheduleofNoncurrentLiabilitiesDetails">
        <link:definition>9955545 - Disclosure - Other Current and Other Long-term Liabilities (Schedule of Noncurrent Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDetails" roleURI="http://www.cumberlandpharma.com/role/DebtDetails">
        <link:definition>9955546 - Disclosure - Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityDetails" roleURI="http://www.cumberlandpharma.com/role/ShareholdersEquityDetails">
        <link:definition>9955547 - Disclosure - Shareholders' Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LossPerShareScheduleofComputationofNumeratorandDenominatorinEarningsPerShareDetails" roleURI="http://www.cumberlandpharma.com/role/LossPerShareScheduleofComputationofNumeratorandDenominatorinEarningsPerShareDetails">
        <link:definition>9955548 - Disclosure - Loss Per Share (Schedule of Computation of Numerator and Denominator in Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LossPerShareScheduleofAntidilutiveSecuritiesExcludedFromComputationofEarningsPerShareDetails" roleURI="http://www.cumberlandpharma.com/role/LossPerShareScheduleofAntidilutiveSecuritiesExcludedFromComputationofEarningsPerShareDetails">
        <link:definition>9955549 - Disclosure - Loss Per Share (Schedule of Anti-dilutive Securities Excluded From Computation of Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesNetDetails" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesNetDetails">
        <link:definition>9955550 - Disclosure - Income Taxes (Schedule of Deferred Tax Assets and Liabilities, Net) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofNetOperatingLossCarryforwardsDetails" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofNetOperatingLossCarryforwardsDetails">
        <link:definition>9955551 - Disclosure - Income Taxes (Schedule of Net Operating Loss Carryforwards) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleoftheComponentsofIncomeTaxBenefitExpenseDetails" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleoftheComponentsofIncomeTaxBenefitExpenseDetails">
        <link:definition>9955552 - Disclosure - Income Taxes (Schedule of the Components of Income Tax Benefit (Expense)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliation2025Details" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliation2025Details">
        <link:definition>9955553 - Disclosure - Income Taxes (Schedule of Effective Income Tax Rate Reconciliation (2025)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliation2024Details" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliation2024Details">
        <link:definition>9955554 - Disclosure - Income Taxes (Schedule of Effective Income Tax Rate Reconciliation (2024)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofTaxCreditCarryforwardsDetails" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofTaxCreditCarryforwardsDetails">
        <link:definition>9955555 - Disclosure - Income Taxes (Schedule of Tax Credit Carryforwards) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesScheduleofIncomeTaxesPaidDetails" roleURI="http://www.cumberlandpharma.com/role/IncomeTaxesScheduleofIncomeTaxesPaidDetails">
        <link:definition>9955556 - Disclosure - Income Taxes (Schedule of Income Taxes Paid) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlansNarrativeDetails">
        <link:definition>9955557 - Disclosure - Stock-Based Compensation Plans (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansStockOptionsActivityDetails" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlansStockOptionsActivityDetails">
        <link:definition>9955558 - Disclosure - Stock-Based Compensation Plans (Stock Options Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansValuationAssumptionsDetails" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlansValuationAssumptionsDetails">
        <link:definition>9955559 - Disclosure - Stock-Based Compensation Plans (Valuation Assumptions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationPlansRestrictedStockActivityDetails" roleURI="http://www.cumberlandpharma.com/role/StockBasedCompensationPlansRestrictedStockActivityDetails">
        <link:definition>9955560 - Disclosure - Stock-Based Compensation Plans (Restricted Stock Activity) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeBenefitPlansDetails" roleURI="http://www.cumberlandpharma.com/role/EmployeeBenefitPlansDetails">
        <link:definition>9955561 - Disclosure - Employee Benefit Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/LeasesNarrativeDetails">
        <link:definition>9955562 - Disclosure - Leases (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofRentExpenseandSubleaseIncomeDetails" roleURI="http://www.cumberlandpharma.com/role/LeasesScheduleofRentExpenseandSubleaseIncomeDetails">
        <link:definition>9955563 - Disclosure - Leases (Schedule of Rent Expense and Sublease Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeasePositionDetails" roleURI="http://www.cumberlandpharma.com/role/LeasesLeasePositionDetails">
        <link:definition>9955564 - Disclosure - Leases (Lease Position) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofLeaseLiabilityMaturitiesandFutureMinimumPaymentsDetails" roleURI="http://www.cumberlandpharma.com/role/LeasesScheduleofLeaseLiabilityMaturitiesandFutureMinimumPaymentsDetails">
        <link:definition>9955565 - Disclosure - Leases (Schedule of Lease Liability Maturities and Future Minimum Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofLeaseLiabilityMaturitiesandFutureMinimumPaymentsDetails_1" roleURI="http://www.cumberlandpharma.com/role/LeasesScheduleofLeaseLiabilityMaturitiesandFutureMinimumPaymentsDetails_1">
        <link:definition>9955565 - Disclosure - Leases (Schedule of Lease Liability Maturities and Future Minimum Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MarketConcentrationsDetails" roleURI="http://www.cumberlandpharma.com/role/MarketConcentrationsDetails">
        <link:definition>9955566 - Disclosure - Market Concentrations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ManufacturingandSupplyAgreementsDetails" roleURI="http://www.cumberlandpharma.com/role/ManufacturingandSupplyAgreementsDetails">
        <link:definition>9955567 - Disclosure - Manufacturing and Supply Agreements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesDetails" roleURI="http://www.cumberlandpharma.com/role/CommitmentsandContingenciesDetails">
        <link:definition>9955568 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialInformationUnauditedDetails" roleURI="http://www.cumberlandpharma.com/role/QuarterlyFinancialInformationUnauditedDetails">
        <link:definition>9955569 - Disclosure - Quarterly Financial Information (Unaudited) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingNarrativeDetails" roleURI="http://www.cumberlandpharma.com/role/SegmentReportingNarrativeDetails">
        <link:definition>9955570 - Disclosure - Segment Reporting (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingScheduleofSegmentReportingInformationDetails" roleURI="http://www.cumberlandpharma.com/role/SegmentReportingScheduleofSegmentReportingInformationDetails">
        <link:definition>9955571 - Disclosure - Segment Reporting (Schedule of Segment Reporting Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ValuationandQualifyingAccountsDetails" roleURI="http://www.cumberlandpharma.com/role/ValuationandQualifyingAccountsDetails">
        <link:definition>9955572 - Disclosure - Valuation and Qualifying Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="cpix_AuditorInformationAbstract" abstract="true" name="AuditorInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_IncreaseDecreaseInCashSurrenderValueOfLifeInsurancePolicy" abstract="false" name="IncreaseDecreaseInCashSurrenderValueOfLifeInsurancePolicy" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ProceedsFromATMOfferingNet" abstract="false" name="ProceedsFromATMOfferingNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_CashPaidDuringYearAbstract" abstract="true" name="CashPaidDuringYearAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_CashPaymentIncludedInMeasurementOfLeaseLiability" abstract="false" name="CashPaymentIncludedInMeasurementOfLeaseLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_PurchasesOfIntangibleAssetsIncurredButNotYetPaid" abstract="false" name="PurchasesOfIntangibleAssetsIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ChangeInUnpaidInvoicesForOfferingCosts" abstract="false" name="ChangeInUnpaidInvoicesForOfferingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_OtherInvestmentLiability" abstract="false" name="OtherInvestmentLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ManufacturingAndSupplyAgreementsAbstract" abstract="true" name="ManufacturingAndSupplyAgreementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ManufacturingAndSupplyAgreementsTextBlock" abstract="false" name="ManufacturingAndSupplyAgreementsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_EmploymentAgreementsAbstract" abstract="true" name="EmploymentAgreementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_EmploymentAgreementsTextBlock" abstract="false" name="EmploymentAgreementsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_PrepaidsAndOtherCurrentAssetsPolicyPolicyTextBlock" abstract="false" name="PrepaidsAndOtherCurrentAssetsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_ScheduleOfDistributionCostsTableTextBlock" abstract="false" name="ScheduleOfDistributionCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_ScheduleOfAdvertisingCostsTableTextBlock" abstract="false" name="ScheduleOfAdvertisingCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_ScheduleofDepreciationExpenseTableTextBlock" abstract="false" name="ScheduleofDepreciationExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_ScheduleofRentExpenseandSubleaseIncomeTableTextBlock" abstract="false" name="ScheduleofRentExpenseandSubleaseIncomeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="cpix_CumberlandEmergingTechnologiesIncMember" abstract="true" name="CumberlandEmergingTechnologiesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_HongKongWinHealthPharmaGroupCoLimitedMember" abstract="true" name="HongKongWinHealthPharmaGroupCoLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_SubsidiaryInvestmentPurchaseOfShares" abstract="false" name="SubsidiaryInvestmentPurchaseOfShares" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_SharebasedCompensationCharitableContributionofSharesShares" abstract="false" name="SharebasedCompensationCharitableContributionofSharesShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="cpix_ShareBasedCompensationCharitableContributionOfSharesCashContributions" abstract="false" name="ShareBasedCompensationCharitableContributionOfSharesCashContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_AccountsReceivableAllowancesByComponentAxis" abstract="true" name="AccountsReceivableAllowancesByComponentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="cpix_AccountsReceivableAllowancesByComponentDomain" abstract="true" name="AccountsReceivableAllowancesByComponentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ChargebacksCashDiscountsAndDamagedGoodsMember" abstract="true" name="ChargebacksCashDiscountsAndDamagedGoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ATMMember" abstract="true" name="ATMMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_WinHealthInvestmentSingaporeLtdMember" abstract="true" name="WinHealthInvestmentSingaporeLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_MartinS.BrownJr.sLawFirmMember" abstract="true" name="MartinS.BrownJr.sLawFirmMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_TaliciaHoldingsInc.Member" abstract="true" name="TaliciaHoldingsInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_StockIssuedDuringPeriodShelfRegistrationProceedsFromSaleOfCorporateSecurities" abstract="false" name="StockIssuedDuringPeriodShelfRegistrationProceedsFromSaleOfCorporateSecurities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_StockIssuedDuringPeriodSharesNewIssuesGross" abstract="false" name="StockIssuedDuringPeriodSharesNewIssuesGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_PaymentsForPlacementFees" abstract="false" name="PaymentsForPlacementFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_CollaborativeArrangementTransactionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" abstract="false" name="CollaborativeArrangementTransactionStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ProductAssetsAndGlobalRightsVibativMember" abstract="true" name="ProductAssetsAndGlobalRightsVibativMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_U.S.ProductAssetRightsSancusoMember" abstract="true" name="U.S.ProductAssetRightsSancusoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_PaymentsToAcquireBusinessMilestonePayment" abstract="false" name="PaymentsToAcquireBusinessMilestonePayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_PaymentsToAcquireBusinessTieredRoyaltyPaymentsPercentage" abstract="false" name="PaymentsToAcquireBusinessTieredRoyaltyPaymentsPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_PaymentsToAcquireBusinessTieredRoyaltyPaymentsThreshold" abstract="false" name="PaymentsToAcquireBusinessTieredRoyaltyPaymentsThreshold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_PaymentsToAcquireBusinessMilestonePaymentRemaining" abstract="false" name="PaymentsToAcquireBusinessMilestonePaymentRemaining" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMilestonePayable" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedMilestonePayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_BusinessCombinationContingentConsiderationLiabilityRollForward" abstract="true" name="BusinessCombinationContingentConsiderationLiabilityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_BusinessCombinationContingentConsiderationEarnedAndAccruedInOperatingExpenses" abstract="false" name="BusinessCombinationContingentConsiderationEarnedAndAccruedInOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ProductKristaloseMember" abstract="true" name="ProductKristaloseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductSancusoMember" abstract="true" name="ProductSancusoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductVibativMember" abstract="true" name="ProductVibativMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductCaldolorMember" abstract="true" name="ProductCaldolorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductAcetadoteMember" abstract="true" name="ProductAcetadoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductOmeclamoxPakMember" abstract="true" name="ProductOmeclamoxPakMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductVaprisolMember" abstract="true" name="ProductVaprisolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductRediTrexMember" abstract="true" name="ProductRediTrexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductTaliciaMember" abstract="true" name="ProductTaliciaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ProductOtherMember" abstract="true" name="ProductOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_VibativMember" abstract="true" name="VibativMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_FederalGrantProgramsMember" abstract="true" name="FederalGrantProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_InventoryNoncurrentTable" abstract="true" name="InventoryNoncurrentTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="cpix_KristaloseMember" abstract="true" name="KristaloseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_VaprisolMember" abstract="true" name="VaprisolMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_CaldolorMember" abstract="true" name="CaldolorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_SancusoMember" abstract="true" name="SancusoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_StudyDrugMember" abstract="true" name="StudyDrugMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_AcetadoteMember" abstract="true" name="AcetadoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_OmeclamoxPakMember" abstract="true" name="OmeclamoxPakMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_FinishedGoodsMember" abstract="true" name="FinishedGoodsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_InventoryNoncurrentLineItems" abstract="true" name="InventoryNoncurrentLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ActivePharmaceuticalIngredientAPIAndWorkInProgressMember" abstract="true" name="ActivePharmaceuticalIngredientAPIAndWorkInProgressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_DepreciationIncludingAmortizationRelatedToLeaseholdImprovements" abstract="false" name="DepreciationIncludingAmortizationRelatedToLeaseholdImprovements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ProductAndLicenseRightsMember" abstract="true" name="ProductAndLicenseRightsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_FiniteLivedIntangibleAssetsAmortizationExpenseYearFourAndAfter" abstract="false" name="FiniteLivedIntangibleAssetsAmortizationExpenseYearFourAndAfter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ProductSalesRelatedLiabilitiesCurrent" abstract="false" name="ProductSalesRelatedLiabilitiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_BusinessCombinationContingentConsiderationLiabilityAccruedCurrent" abstract="false" name="BusinessCombinationContingentConsiderationLiabilityAccruedCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_AccruedLiabilitiesStudies" abstract="false" name="AccruedLiabilitiesStudies" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_AccruedLiabilitiesStockPayable" abstract="false" name="AccruedLiabilitiesStockPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_AccruedLiabilitiesInventoryPurchases" abstract="false" name="AccruedLiabilitiesInventoryPurchases" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_RevolvingCreditLoanAgreementMember" abstract="true" name="RevolvingCreditLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_InitialRevolvingCreditLoanAgreementMember" abstract="true" name="InitialRevolvingCreditLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_PinnacleBankMember" abstract="true" name="PinnacleBankMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_LineOfCreditFacilityAccordionFeatureIncreaseLimit" abstract="false" name="LineOfCreditFacilityAccordionFeatureIncreaseLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" abstract="false" name="LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_StockIssuedDuringPeriodPricePerShareNewIssues" abstract="false" name="StockIssuedDuringPeriodPricePerShareNewIssues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="cpix_StockIssuedDuringPeriodGrossProceedsFromInitialPublicOffering" abstract="false" name="StockIssuedDuringPeriodGrossProceedsFromInitialPublicOffering" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_StockIssuedDuringPeriodNewSharesUnderwritingDiscounts" abstract="false" name="StockIssuedDuringPeriodNewSharesUnderwritingDiscounts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards" abstract="false" name="DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsPropertyAndEquipmentAndIntangibles" abstract="false" name="DeferredTaxAssetsPropertyAndEquipmentAndIntangibles" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetOperatingLeaseLiabilities" abstract="false" name="DeferredTaxAssetOperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsContingentRoyaltyLiabilities" abstract="false" name="DeferredTaxAssetsContingentRoyaltyLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReservesForExpiredProduct" abstract="false" name="DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReservesForExpiredProduct" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsBusinessInterestExpenseLimitation" abstract="false" name="DeferredTaxAssetsBusinessInterestExpenseLimitation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxAssetsDeferredCharges" abstract="false" name="DeferredTaxAssetsDeferredCharges" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_DeferredTaxLiabilityOperatingLeaseRightOfUseAssets" abstract="false" name="DeferredTaxLiabilityOperatingLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_NetDeferredTaxAssetsGross" abstract="false" name="NetDeferredTaxAssetsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_ExpirationTimePeriodAxis" abstract="true" name="ExpirationTimePeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ExpirationTimePeriodDomain" abstract="true" name="ExpirationTimePeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ExpirationTermOneMember" abstract="true" name="ExpirationTermOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ExpirationTermTwoMember" abstract="true" name="ExpirationTermTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_IndefiniteMember" abstract="true" name="IndefiniteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_EffectiveIncomeTaxRateReconciliationTaxCreditExpirationsAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCreditExpirationsAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_EffectiveIncomeTaxRateReconciliationTaxCreditExpirationsPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCreditExpirationsPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_FederalAndStateMember" abstract="true" name="FederalAndStateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_IncomeTaxExpensedAndPaidNet" abstract="false" name="IncomeTaxExpensedAndPaidNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cpix_LongTermIncentiveCompensationPlan2007Member" abstract="true" name="LongTermIncentiveCompensationPlan2007Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_DirectorsIncentivePlan2007Member" abstract="true" name="DirectorsIncentivePlan2007Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_NonprincipalOwnerMember" abstract="true" name="NonprincipalOwnerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlansAvailableForFutureGrants" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlansAvailableForFutureGrants" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cpix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisePriceAsPercentOfWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisePriceAsPercentOfWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_ShareBasedCompensationArrangementByShareBasedPaymentAwardShareholderPercent" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardShareholderPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_DefinedContributionPlanEligibilityMinimumEmployeeAge" abstract="false" name="DefinedContributionPlanEligibilityMinimumEmployeeAge" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cpix_DefinedContributionPlanEligibilityMinimumEmployeeServiceTimeForParticipationEligibility" abstract="false" name="DefinedContributionPlanEligibilityMinimumEmployeeServiceTimeForParticipationEligibility" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cpix_BroadwestLeaseFiveYearRenewalOptionMember" abstract="true" name="BroadwestLeaseFiveYearRenewalOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_A1600WestEndAvenuePartnersLLCMember" abstract="true" name="A1600WestEndAvenuePartnersLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_NephronPharmaceuticalsCorporationNephronMember" abstract="true" name="NephronPharmaceuticalsCorporationNephronMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_KindosPharmaceuticalsCo.Ltd.Member" abstract="true" name="KindosPharmaceuticalsCo.Ltd.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_LesseeOperatingLeaseLeasedArea" abstract="false" name="LesseeOperatingLeaseLeasedArea" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:areaItemType"/>
  <xs:element id="cpix_LesseeOperatingLeaseNumberOfRenewalTerms" abstract="false" name="LesseeOperatingLeaseNumberOfRenewalTerms" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cpix_LesseeOperatingLeaseBaseRent" abstract="false" name="LesseeOperatingLeaseBaseRent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="srt-types:perUnitItemType"/>
  <xs:element id="cpix_LesseeOperatingLeaseRentIncrease" abstract="false" name="LesseeOperatingLeaseRentIncrease" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cpix_SalesRevenueGoodsGrossMember" abstract="true" name="SalesRevenueGoodsGrossMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_CustomerOneMember" abstract="true" name="CustomerOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_CustomerTwoMember" abstract="true" name="CustomerTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_CustomerThreeMember" abstract="true" name="CustomerThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_Customer12And3Member" abstract="true" name="Customer12And3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cpix_ManufacturingandSupplyAgreementTable" abstract="true" name="ManufacturingandSupplyAgreementTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ManufacturingandSupplyAgreementLineItems" abstract="true" name="ManufacturingandSupplyAgreementLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cpix_ManufacturingAgreementsNumberOfPrimarySuppliersForEachProduct" abstract="false" name="ManufacturingAgreementsNumberOfPrimarySuppliersForEachProduct" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cpix_PaymentsToAcquireBusinessTieredRoyaltyPaymentsTerm" abstract="false" name="PaymentsToAcquireBusinessTieredRoyaltyPaymentsTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
