Example Dosage - Oral Solution PRN

dosage
<dosage xmlns="http://hl7.org/fhir">
    <text value="Take 10ml to 20ml 4 to 6 hours a day as needed for hip pain" />
    <additionalInstruction>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="418914006" />
            <display value="Warning. May cause drowsiness. If affected do not drive or operate machinery. Avoid alcoholic drink (qualifier value)" />
        </coding>
    </additionalInstruction>
    <timing>
        <repeat>
            <frequency value="1" />
            <period value="4" />
            <periodMax value="6" />
            <periodUnit value="h" />
        </repeat>
    </timing>
    <asNeededCodeableConcept>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="49218002" />
            <display value="Hip Pain (finding)" />
        </coding>
    </asNeededCodeableConcept>
    <route>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="26643006" />
            <display value="Oral Route" />
        </coding>
    </route>
    <method>
        <coding>
            <system value="http://snomed.info/sct" />
            <code value="421521009" />
            <display value="Swallow - dosing instruction imperative (qualifier value)" />
        </coding>
    </method>
    <doseAndRate>
        <type>
            <coding>
                <system value="http://terminology.hl7.org/CodeSystem/dose-rate-type" />
                <code value="ordered" />
                <display value="Ordered" />
            </coding>
        </type>
        <doseRange>
            <low>
                <value value="10" />
                <unit value="milliliter" />
                <system value="http://unitsofmeasure.org" />
                <code value="mL" />
            </low>
            <high>
                <value value="20" />
                <unit value="milliliter" />
                <system value="http://unitsofmeasure.org" />
                <code value="mL" />
            </high>
        </doseRange>
    </doseAndRate>
</dosage>