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A Type
A class of medical drugs, e.g., statins. Classes can represent general pharmacological class, common mechanisms of action, common physiological effects, etc.
PropertyExpected TypeDescription
Properties from DrugClass
drug Drug Specifying a drug or medicine used in a medication procedure.
Properties from MedicalEntity
code MedicalCode A medical code for the entity, taken from a controlled vocabulary or ontology such as ICD-9, DiseasesDB, MeSH, SNOMED-CT, RxNorm, etc.
funding Grant A Grant that directly or indirectly provide funding or sponsorship for this item. See also ownershipFundingInfo.
Inverse property: fundedItem
guideline MedicalGuideline A medical guideline related to this entity.
legalStatus DrugLegalStatus  or
MedicalEnumeration  or
The drug or supplement's legal status, including any controlled substance schedules that apply.
medicineSystem MedicineSystem The system of medicine that includes this MedicalEntity, for example 'evidence-based', 'homeopathic', 'chiropractic', etc.
recognizingAuthority Organization If applicable, the organization that officially recognizes this entity as part of its endorsed system of medicine.
relevantSpecialty MedicalSpecialty If applicable, a medical specialty in which this entity is relevant.
study MedicalStudy A medical study or trial related to this entity.
Properties from Thing
additionalType Text  or
An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the style guide.
alternateName Text An alias for the item.
description Text  or
A description of the item.
disambiguatingDescription Text A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
identifier PropertyValue  or
Text  or
The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
image ImageObject  or
An image of the item. This can be a URL or a fully described ImageObject.
mainEntityOfPage CreativeWork  or
Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.
Inverse property: mainEntity
name Text The name of the item.
potentialAction Action Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
sameAs URL URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
subjectOf CreativeWork  or
A CreativeWork or Event about this Thing.
Inverse property: about
url URL URL of the item.

Instances of DrugClass may appear as a value for the following properties
PropertyOn TypesDescription
drugClass Drug The class of drug this belongs to (e.g., statins).


Example 1
Example notes or example HTML without markup.
<h1>About High Blood Pressure (hypertension)</h1>

High blood pressure is diagnosed by measuring ...
There are many common treatments for high blood pressure,
including beta-blocker drugs such as propanaolol (Innopran)
and atenonlol (Tenormin) ...
Example encoded as Microdata embedded in HTML.
<body itemscope itemtype="">
  <link itemprop="audience" href="" />
  <link itemprop="specialty" href="" />
  <meta itemprop="lastReviewed" content="2011-09-14"/>
    <span itemprop="about" itemscope itemtype="">
      <span itemprop="name">High Blood Pressure</span>
      (<span itemprop="name">hypertension</span>)</span>
  <h2><span itemprop="mainContentOfPage">Diagnosis</span></h2>
  High blood pressure is diagnosed by measuring ...
  <h2><span itemprop="mainContentOfPage">Treatment</span></h2>
  There are many common treatments for high blood pressure,
  <span itemscope itemtype="">
    <span itemprop="name">beta-blocker</span> drugs such as
    <span itemprop="drug" itemscope itemtype="">
      <span itemprop="nonProprietaryName">propanaolol</span>
      (<span itemprop="alternateName">Innopran</span>)
    <span itemprop="drug" itemscope itemtype="">
      <span itemprop="nonProprietaryName">atenolol</span>
      (<span itemprop="alternateName">Tenormin</span>)
    </span> ...
Example encoded as RDFa embedded in HTML.
<body vocab="" typeof="MedicalWebPage">
  <link property="audience" href="" />
  <link property="specialty" href="" />
  <meta property="lastReviewed" content="2011-09-14"/>
    <span property="about"  typeof="MedicalCondition">
      <span property="name">High Blood Pressure</span>
      (<span property="name">hypertension</span>)</span>
  <h2><span property="mainContentOfPage">Diagnosis</span></h2>
  High blood pressure is diagnosed by measuring ...
  <h2><span property="mainContentOfPage">Treatment</span></h2>
  There are many common treatments for high blood pressure,
  <span  typeof="DrugClass">
    <span property="name">beta-blocker</span> drugs such as
    <span property="drug"  typeof="Drug">
      <span property="nonProprietaryName">propanaolol</span>
      (<span property="alternateName">Innopran</span>)
    <span property="drug"  typeof="Drug">
      <span property="nonProprietaryName">atenolol</span>
      (<span property="alternateName">Tenormin</span>)
    </span> ...
Example encoded as JSON-LD in a HTML script tag.
<script type="application/ld+json">
  "@context": "",
  "@type": "MedicalWebPage",
  "about": {
    "@type": "MedicalCondition",
    "name": [
      "High Blood Pressure",
  "mainContentOfPage": [
  "audience": "",
  "drug": [
      "@type": "Drug",
      "nonProprietaryName": "propanaolol",
      "alternateName": "Innopran"
      "@type": "Drug",
      "nonProprietaryName": "atenolol",
      "alternateName": "Tenormin"
  "lastReviewed": "2011-09-14",
  "name": "beta-blocker",
  "specialty": ""
Structured representation of the JSON-LD example.