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

<Medication xmlns="http://hl7.org/fhir">
  <id value="med0316"/>
  <contained>
    <Substance>
      <id value="sub04"/>
      <code>
        <concept>
          <coding>
            <system value="http://snomed.info/sct"/>
            <code value="387324004"/>
            <display value="Chlortalidone (substance)"/>
          </coding>
        </concept>
      </code>
    </Substance>
  </contained>
  <code>
    <coding>
      <system value="http://snomed.info/sct"/>
      <code value="317935006"/>
      <display value="Chlorthalidone 50 mg oral tablet"/>
    </coding>
  </code>
  <doseForm>
    <coding>
      <system value="http://snomed.info/sct"/>
      <code value="385055001"/>
      <display value="Tablet (basic dose form)"/>
    </coding>
  </doseForm>
  <ingredient>
    <item>
      <reference>
        <reference value="#sub04"/>
      </reference>
    </item>
    <strengthRatio>
      <numerator>
        <value value="50"/>
        <system value="http://unitsofmeasure.org"/>
        <code value="mg"/>
      </numerator>
      <denominator>
        <value value="1"/>
        <system value="http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm"/>
        <code value="TAB"/>
      </denominator>
    </strengthRatio>
  </ingredient>
</Medication>