Dosage with a Pre-Condition - Alprazolam

{
  "resourceType": "MedicationAdministration",
  "id": "medadmin0311",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative with Details</b></p><p><b>id</b>: medadmin0311</p><p><b>contained</b>: </p><p><b>status</b>: completed</p><p><b>medication</b>: id: med0304; Alprazolam 0.25mg Oral Tablet <span>(Details : {RxNorm code '308047' = 'ALPRAZolam 0.25 MG Oral Tablet', given as 'Alprazolam 0.25mg Oral Tablet'})</span></p><p><b>subject</b>: <a>Donald Duck</a></p><p><b>effective</b>: 15/01/2015 10:03:00 PM --&gt; 16/01/2015 2:03:00 AM</p><h3>Performers</h3><table><tr><td>-</td><td><b>Actor</b></td></tr><tr><td>*</td><td><a>Patrick Pump</a></td></tr></table><p><b>reasonCode</b>: Dysmenorrhea <span>(Details : {SNOMED CT code '266599000' = 'Period pain', given as 'Dysmenorrhea'})</span></p><p><b>request</b>: <a>MedicationRequest/medrx0305</a></p><h3>Dosages</h3><table><tr><td>-</td><td><b>Text</b></td><td><b>Route</b></td><td><b>Dose</b></td></tr><tr><td>*</td><td>0.25mg PO every 6-12 hours as needed for menses from Jan 15-20, 2015.  Do not exceed more than 4mg per day</td><td>Oral Route <span>(Details : {SNOMED CT code '26643006' = 'Oral route', given as 'Oral Route'})</span></td><td>1 TAB<span> (Details: http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm code TAB = 'Tablet')</span></td></tr></table></div>"
  },
  "contained": [
    {
      "resourceType": "Medication",
      "id": "med0304",
      "code": {
        "coding": [
          {
            "system": "http://www.nlm.nih.gov/research/umls/rxnorm",
            "code": "308047",
            "display": "Alprazolam 0.25mg Oral Tablet"
          }
        ]
      }

  "resourceType" : "MedicationAdministration",
  "id" : "medadmin0311",
  "contained" : [{
    "resourceType" : "Medication",
    "id" : "med0304",
    "code" : {
      "coding" : [{
        "system" : "http://www.nlm.nih.gov/research/umls/rxnorm",
        "code" : "308047",
        "display" : "alprazolam 0.25 MG Oral Tablet"
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  "status" : "completed",
  "medication" : {
    "reference" : {
      "reference" : "#med0304"

    }
  ],
  "status": "completed",
  "medicationReference": {
    "reference": "#med0304"

  },
  "subject": {
    "reference": "Patient/pat1",
    "display": "Donald Duck"

  "subject" : {
    "reference" : "Patient/pat1",
    "display" : "Donald Duck"

  },
  "effectivePeriod": {
    "start": "2015-01-15T22:03:00+01:00",
    "end": "2015-01-16T02:03:00+01:00"

  "occurrencePeriod" : {
    "start" : "2015-01-15T22:03:00+01:00",
    "end" : "2015-01-16T02:03:00+01:00"

  },
  "performer": [
    {
      "actor": {
        "reference": "Practitioner/f007",
        "display": "Patrick Pump"

  "performer" : [{
    "actor" : {
      "reference" : {
        "reference" : "Practitioner/f007",
        "display" : "Patrick Pump"

      }
    }
  ],
  "reasonCode": [
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      "coding": [
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          "system": "http://snomed.info/sct",
          "code": "266599000",
          "display": "Dysmenorrhea"
        }
      ]

  }],
  "reason" : [{
    "concept" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "266599000",
        "display" : "Dysmenorrhea"
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    }
  ],
  "request": {
    "reference": "MedicationRequest/medrx0305"

  }],
  "request" : {
    "reference" : "MedicationRequest/medrx0305"

  },
  "dosage": {
    "text": "0.25mg PO every 6-12 hours as needed for menses from Jan 15-20, 2015.  Do not exceed more than 4mg per day",
    "route": {
      "coding": [
        {
          "system": "http://snomed.info/sct",
          "code": "26643006",
          "display": "Oral Route"
        }
      ]

  "dosage" : {
    "text" : "0.25mg PO every 6-12 hours as needed for menses from Jan 15-20, 2015.  Do not exceed more than 4mg per day",
    "route" : {
      "coding" : [{
        "system" : "http://snomed.info/sct",
        "code" : "26643006",
        "display" : "Oral Route"
      }]

    },
    "dose": {
      "value": 1,
      "unit": "TAB",
      "system": "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
      "code": "TAB"

    "dose" : {
      "value" : 1,
      "unit" : "TAB",
      "system" : "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
      "code" : "TAB"

    }
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}