Request for Over the Counter Medication - Tylenol PM - with dosage range as needed with pre-condition for use

{
  "resourceType": "MedicationRequest",
  "id": "medrx0310",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p><b>Generated Narrative: MedicationRequest</b><a name=\"medrx0310\"> </a></p><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Resource MedicationRequest &quot;medrx0310&quot; </p></div><p><b>identifier</b>: id: 12345689 (OFFICIAL)</p><p><b>status</b>: active</p><p><b>intent</b>: order</p><h3>Medications</h3><table class=\"grid\"><tr><td>-</td><td><b>Reference</b></td></tr><tr><td>*</td><td><a name=\"med0309\"> </a><blockquote><p/><p><a name=\"med0309\"> </a></p><p><b>code</b>: Tylenol PM <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"http://terminology.hl7.org/3.1.0/CodeSystem-v3-ndc.html\">National drug codes</a>#50580-608-02)</span></p></blockquote></td></tr></table><p><b>subject</b>: <a href=\"patient-example-a.html\">Patient/pat1: Donald Duck</a> &quot;Donald DUCK&quot;</p><p><b>encounter</b>: <a href=\"encounter-example-f001-heart.html\">Encounter/f001: encounter who leads to this prescription</a></p><p><b>authoredOn</b>: 2015-01-15</p><p><b>requester</b>: <a href=\"practitioner-example-f007-sh.html\">Practitioner/f007: Patrick Pump</a> &quot;Simone HEPS&quot;</p><blockquote><p><b>dose</b></p><blockquote><p><b>dosageInstruction</b></p><p><b>sequence</b>: 1</p><p><b>text</b>: Take 1-2 tablets once daily at bedtime as needed for restless legs</p><p><b>additionalInstruction</b>: Take at bedtime <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> ()</span></p><p><b>timing</b>: Do Once per 1 days</p><p><b>asNeededFor</b>: Restless Legs <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#32914008)</span></p><p><b>route</b>: Oral Route <span style=\"background: LightGoldenRodYellow; margin: 4px; border: 1px solid khaki\"> (<a href=\"https://browser.ihtsdotools.org/\">SNOMED CT</a>#26643006)</span></p></blockquote></blockquote></div>"
  },
  "contained": [
    {
      "resourceType": "Medication",
      "id": "med0309",
      "code": {
        "coding": [
          {
            "system": "http://hl7.org/fhir/sid/ndc",
            "code": "50580-608-02",
            "display": "Tylenol PM"
          }
        ]
      }
    }
  ],
  "identifier": [
    {
      "use": "official",
      "system": "http://www.bmc.nl/portal/prescriptions",
      "value": "12345689"
    }
  ],
  "status": "active",
  "intent": "order",
  "medication": {
    "reference": {
      "reference": "#med0309"
    }
  },
  "subject": {
    "reference": "Patient/pat1",
    "display": "Donald Duck"
  },
  "encounter": {
    "reference": "Encounter/f001",
    "display": "encounter who leads to this prescription"
  },
  "authoredOn": "2015-01-15",
  "requester": {
    "reference": "Practitioner/f007",
    "display": "Patrick Pump"
  },
  "dose": {
    "dosageInstruction": [
      {
        "sequence": 1,
        "text": "Take 1-2 tablets once daily at bedtime as needed for restless legs",
        "additionalInstruction": [
          {
            "text": "Take at bedtime"
          }
        ],
        "timing": {
          "repeat": {
            "frequency": 1,
            "period": 1,
            "periodUnit": "d"
          }
        },
        "asNeededFor": [
          {
            "coding": [
              {
                "system": "http://snomed.info/sct",
                "code": "32914008",
                "display": "Restless Legs"
              }
            ]
          }
        ],
        "route": {
          "coding": [
            {
              "system": "http://snomed.info/sct",
              "code": "26643006",
              "display": "Oral Route"
            }
          ]
        },
        "doseAndRate": [
          {
            "type": {
              "coding": [
                {
                  "system": "http://terminology.hl7.org/CodeSystem/dose-rate-type",
                  "code": "ordered",
                  "display": "Ordered"
                }
              ]
            },
            "doseRange": {
              "low": {
                "value": 1,
                "unit": "TAB",
                "system": "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
                "code": "TAB"
              },
              "high": {
                "value": 2,
                "unit": "TAB",
                "system": "http://terminology.hl7.org/CodeSystem/v3-orderableDrugForm",
                "code": "TAB"
              }
            }
          }
        ]
      }
    ]
  }
}