{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schema.org/schemas/drug.json",
  "title": "Schema.org Drug",
  "description": "A chemical or biologic substance, used as a medical therapy, that has a physiological effect on an organism.",
  "type": "object",
  "required": ["@type", "name"],
  "properties": {
    "@type": {
      "type": "string",
      "const": "Drug",
      "description": "The Schema.org type."
    },
    "@context": {
      "type": "string",
      "default": "https://schema.org"
    },
    "name": {
      "type": "string",
      "description": "The name of the drug."
    },
    "description": {
      "type": "string",
      "description": "A description of the drug."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "URL with information about the drug."
    },
    "alternateName": {
      "oneOf": [
        { "type": "string" },
        { "type": "array", "items": { "type": "string" } }
      ],
      "description": "An alias for the drug (e.g., brand names, generic names)."
    },
    "nonProprietaryName": {
      "type": "string",
      "description": "The generic name of this drug or supplement."
    },
    "proprietaryName": {
      "type": "string",
      "description": "The proprietary name of this drug."
    },
    "activeIngredient": {
      "oneOf": [
        { "type": "string" },
        { "type": "array", "items": { "type": "string" } }
      ],
      "description": "An active ingredient, typically chemical compounds and/or biologic substances."
    },
    "drugClass": {
      "type": "object",
      "description": "The class of drug this belongs to.",
      "properties": {
        "@type": { "type": "string", "const": "DrugClass" },
        "name": { "type": "string" }
      }
    },
    "administrationRoute": {
      "type": "string",
      "description": "A route by which this drug may be administered (e.g., oral, intravenous, topical)."
    },
    "dosageForm": {
      "type": "string",
      "description": "A dosage form in which this drug/supplement is available (e.g., tablet, capsule, injection)."
    },
    "doseSchedule": {
      "oneOf": [
        { "$ref": "#/$defs/DoseSchedule" },
        { "type": "array", "items": { "$ref": "#/$defs/DoseSchedule" } }
      ],
      "description": "A dosing schedule for the drug."
    },
    "maximumIntake": {
      "$ref": "#/$defs/MaximumDoseSchedule",
      "description": "Recommended intake of this supplement for a given population."
    },
    "mechanismOfAction": {
      "type": "string",
      "description": "The specific biochemical interaction through which this drug or supplement produces its pharmacological effect."
    },
    "interactingDrug": {
      "oneOf": [
        { "$ref": "#" },
        { "type": "array", "items": { "$ref": "#" } }
      ],
      "description": "Another drug that is known to interact with this drug."
    },
    "foodWarning": {
      "type": "string",
      "description": "Any precaution, guidance, contraindication, etc. related to consumption of specific foods."
    },
    "alcoholWarning": {
      "type": "string",
      "description": "Any precaution, guidance, contraindication, etc. related to consumption of alcohol."
    },
    "pregnancyWarning": {
      "type": "string",
      "description": "Any precaution, guidance, contraindication, etc. related to this drug's use during pregnancy."
    },
    "breastfeedingWarning": {
      "type": "string",
      "description": "Any precaution, guidance, contraindication, etc. related to this drug's use by breastfeeding mothers."
    },
    "warning": {
      "type": "string",
      "description": "Any FDA or other warnings about the drug."
    },
    "overdosage": {
      "type": "string",
      "description": "Any information related to overdose on a drug."
    },
    "clinicalPharmacology": {
      "type": "string",
      "description": "Description of the absorption and elimination of drugs."
    },
    "availableStrength": {
      "oneOf": [
        { "$ref": "#/$defs/DrugStrength" },
        { "type": "array", "items": { "$ref": "#/$defs/DrugStrength" } }
      ],
      "description": "An available dosage strength for the drug."
    },
    "isProprietary": {
      "type": "boolean",
      "description": "True if this item's name is a proprietary/brand name."
    },
    "isAvailableGenerically": {
      "type": "boolean",
      "description": "True if the drug is available in a generic form."
    },
    "prescriptionStatus": {
      "type": "string",
      "enum": ["OTC", "PrescriptionOnly"],
      "description": "Indicates whether this drug is available by prescription or over-the-counter."
    },
    "legalStatus": {
      "type": "string",
      "description": "The drug or supplement's legal status."
    },
    "manufacturer": {
      "$ref": "schema-org-organization-schema.json",
      "description": "The manufacturer of the product."
    },
    "code": {
      "type": "object",
      "description": "A medical code for the drug.",
      "properties": {
        "@type": { "type": "string", "const": "MedicalCode" },
        "codeValue": { "type": "string" },
        "codingSystem": { "type": "string" }
      }
    },
    "sameAs": {
      "oneOf": [
        { "type": "string", "format": "uri" },
        { "type": "array", "items": { "type": "string", "format": "uri" } }
      ],
      "description": "URL of a reference Web page that unambiguously indicates the item's identity."
    }
  },
  "$defs": {
    "DoseSchedule": {
      "type": "object",
      "description": "A specific dosing schedule for a drug or supplement.",
      "properties": {
        "@type": { "type": "string", "enum": ["DoseSchedule", "MaximumDoseSchedule", "RecommendedDoseSchedule", "ReportedDoseSchedule"] },
        "doseUnit": { "type": "string", "description": "The unit of the dose (e.g., mg)." },
        "doseValue": { "type": "number", "description": "The value of the dose." },
        "frequency": { "type": "string", "description": "How often the dose is taken." },
        "targetPopulation": { "type": "string", "description": "Characteristics of the population for which this is intended." }
      }
    },
    "MaximumDoseSchedule": {
      "type": "object",
      "description": "The maximum dosing schedule considered safe.",
      "properties": {
        "@type": { "type": "string", "const": "MaximumDoseSchedule" },
        "doseUnit": { "type": "string" },
        "doseValue": { "type": "number" },
        "frequency": { "type": "string" },
        "targetPopulation": { "type": "string" }
      }
    },
    "DrugStrength": {
      "type": "object",
      "description": "A specific strength in which a medical drug is available.",
      "properties": {
        "@type": { "type": "string", "const": "DrugStrength" },
        "activeIngredient": { "type": "string" },
        "strengthUnit": { "type": "string" },
        "strengthValue": { "type": "number" }
      }
    }
  }
}