<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>