</> Web Validators

Full Schema Hierarchy

Browse every schema.org type: what it inherits from, what inherits from it, and every property it accepts.

Built from schema.org's own machine-readable release -- 939 types and 1538 properties, version 30.1 -- and served from a committed copy, so it works whether or not schema.org is reachable. Each property is shown with the type it was declared on, which is the part that is hard to see on the official hierarchy page.

Based on: Schema.org · Schema.org — Full Hierarchy

About this validation

Browses the schema.org type hierarchy from a committed copy of schema.org's own machine-readable release: supertypes, subtypes, and the properties a type accepts including everything it inherits.

Rules reviewed:
Nov 15, 2026

SEOTechTests methodology: Serves schema.org's type hierarchy from a copy of its own machine-readable release that is generated by a script in this repository and committed, so the page never depends on schema.org being reachable. Supertypes are flattened breadth-first, and the property list for a type is everything declared on it plus everything inherited.

Standards and vendor-documented behavior can change. This reflects the source as last reviewed above, not a permanent guarantee.

Drug

A chemical or biologic substance, used as a medical therapy, that has a physiological effect on an organism.

schema.org/Drug117 properties0 subtypesin the health-lifesci area, not the core vocabulary

Inheritance

MedicalEntity→Thing→Substance→Product→Drug

Properties declared on Drug (30)

activeIngredientTextAn active ingredient, typically chemical compounds and/or biologic substances.
administrationRouteTextA route by which this drug may be administered, e.g.
alcoholWarningTextAny precaution, guidance, contraindication, etc.
availableStrengthDrugStrengthAn available dosage strength for the drug.
breastfeedingWarningTextAny precaution, guidance, contraindication, etc.
clincalPharmacologyTextDescription of the absorption and elimination of drugs, including their concentration (pharmacokinetics, pK) and biological effects (pharmacodynamics, pD).
clinicalPharmacologyTextDescription of the absorption and elimination of drugs, including their concentration (pharmacokinetics, pK) and biological effects (pharmacodynamics, pD).
dosageFormTextA dosage form in which this drug/supplement is available, e.g.
doseScheduleDoseScheduleA dosing schedule for the drug for a given population, either observed, recommended, or maximum dose based on the type used.
drugClassDrugClassThe class of drug this belongs to (e.g., statins).
drugUnitTextThe unit in which the drug is measured, e.g.
foodWarningTextAny precaution, guidance, contraindication, etc.
includedInHealthInsurancePlanHealthInsurancePlanThe insurance plans that cover this drug.
interactingDrugDrugAnother drug that is known to interact with this drug in a way that impacts the effect of this drug or causes a risk to the patient.
isAvailableGenericallyBooleanTrue if the drug is available in a generic form (regardless of name).
isProprietaryBooleanTrue if this item's name is a proprietary/brand name (vs.
labelDetailsURLLink to the drug's label details.
legalStatusDrugLegalStatus, MedicalEnumeration, TextThe drug or supplement's legal status, including any controlled substance schedules that apply.
maximumIntakeMaximumDoseScheduleRecommended intake of this supplement for a given population as defined by a specific recommending authority.
mechanismOfActionTextThe specific biochemical interaction through which this drug or supplement produces its pharmacological effect.
nonProprietaryNameTextThe generic name of this drug or supplement.
overdosageTextAny information related to overdose on a drug, including signs or symptoms, treatments, contact information for emergency response.
pregnancyCategoryDrugPregnancyCategoryPregnancy category of this drug.
pregnancyWarningTextAny precaution, guidance, contraindication, etc.
prescribingInfoURLLink to prescribing information for the drug.
prescriptionStatusDrugPrescriptionStatus, TextIndicates the status of drug prescription, e.g.
proprietaryNameTextProprietary name given to the diet plan, typically by its originator or creator.
relatedDrugDrugAny other drug related to this one, for example commonly-prescribed alternatives.
rxcuiTextThe RxCUI drug identifier from RXNORM.
warningText, URLAny FDA or other warnings about the drug (text or URL).

Inherited properties (87)

additionalPropertyfrom ProductPropertyValueA property-value pair representing an additional characteristic of the entity, e.g.
additionalTypefrom ThingText, URLAn additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax.
aggregateRatingfrom ProductAggregateRatingThe overall rating, based on a collection of reviews or ratings, of the item.
alternateNamefrom ThingTextAn alias for the item.
asinfrom ProductText, URLAn Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Am...
audiencefrom ProductAudienceAn intended audience, i.e.
authorizedRepresentativefrom ProductOrganization, PersonAn organization or person officially appointed to act on behalf of the manufacturer in a specific region or context.
awardfrom ProductTextAn award won by or for this item.
awardsfrom ProductTextAwards won by or for this item.
brandfrom ProductBrand, OrganizationThe brand(s) associated with a product or service, or the brand(s) maintained by an organization or business person.
categoryfrom ProductCategoryCode, PhysicalActivityCategory, Text, Thing, URLA category for the item.
codefrom MedicalEntityMedicalCodeA medical code for the entity, taken from a controlled vocabulary or ontology such as ICD-9, DiseasesDB, MeSH, SNOMED-CT, RxNorm, etc.
colorfrom ProductTextThe color of the product.
colorSwatchfrom ProductImageObject, URLA color swatch image, visualizing the color of a Product.
consumerNoticefrom ProductText, TextObject, URL, WebContentA consumer notice, such as a safety warning or mandatory information, related to the product.
countryOfAssemblyfrom ProductTextThe place where the product was assembled.
countryOfLastProcessingfrom ProductTextThe place where the item (typically Product) was last processed and tested before importation.
countryOfOriginfrom ProductCountryThe country of origin of something, including products as well as creative works such as movie and TV content.
depthfrom ProductDistance, QuantitativeValueThe depth of the item.
descriptionfrom ThingText, TextObjectA description of the item.
disambiguatingDescriptionfrom ThingTextA sub property of description.
displayLocationfrom ProductPlaceThe location at which an item can be viewed or experienced in-person.
fundingfrom ProductGrantA Grant that directly or indirectly provide funding or sponsorship for this item.
gtinfrom ProductText, URLA Global Trade Item Number (GTIN).
gtin12from ProductTextThe GTIN-12 code of the product, or the product to which the offer refers.
gtin13from ProductTextThe GTIN-13 code of the product, or the product to which the offer refers.
gtin14from ProductTextThe GTIN-14 code of the product, or the product to which the offer refers.
gtin8from ProductTextThe GTIN-8 code of the product, or the product to which the offer refers.
guidelinefrom MedicalEntityMedicalGuidelineA medical guideline related to this entity.
hasAdultConsiderationfrom ProductAdultOrientedEnumerationUsed to tag an item to be intended or suitable for consumption or use by adults only.
hasCertificationfrom ProductCertificationCertification information about a product, organization, service, place, or person.
hasDigitalProductPassportfrom ProductDigitalProductPassport, URLA link to a Digital Product Passport (DPP) or a digital record detailing the lifecycle, sustainability, and compliance data for this product or offer.
hasEnergyConsumptionDetailsfrom ProductEnergyConsumptionDetailsDefines the energy efficiency Category (also known as "class" or "rating") for a product according to an international energy efficiency standard.
hasGS1DigitalLinkfrom ProductURLThe GS1 digital link associated with the object.
hasMeasurementfrom ProductQuantitativeValueA measurement of an item, For example, the inseam of pants, the wheel size of a bicycle, the gauge of a screw, or the carbon footprint measured for certification by an authority.
hasMerchantReturnPolicyfrom ProductMerchantReturnPolicySpecifies a MerchantReturnPolicy that may be applicable.
hasProductReturnPolicyfrom ProductProductReturnPolicyIndicates a ProductReturnPolicy that may be applicable.
heightfrom ProductDistance, QuantitativeValueThe height of the item.
identifierfrom ThingPropertyValue, Text, URLThe identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc.
imagefrom ThingImageObject, URLAn image of the item.
importerfrom ProductOrganization, PersonAn organization or person who imports the product into a specific market or region.
inProductGroupWithIDfrom ProductTextIndicates the productGroupID for a ProductGroup that this product isVariantOf.
isAccessoryOrSparePartForfrom ProductProductA pointer to another product (or multiple products) for which this product is an accessory or spare part.
isConsumableForfrom ProductProductA pointer to another product (or multiple products) for which this product is a consumable.
isFamilyFriendlyfrom ProductBooleanIndicates whether this content is family friendly.
isOftenBoughtWithfrom ProductProductIndicates a product that is often bought with the described product.
isRelatedTofrom ProductProduct, ServiceA pointer to another, somehow related product (or multiple products).
isSimilarTofrom ProductProduct, ServiceA pointer to another, functionally similar product (or multiple products).
isVariantOffrom ProductProductGroup, ProductModelIndicates the kind of product that this is a variant of.
itemConditionfrom ProductOfferItemConditionA predefined value from OfferItemCondition specifying the condition of the product or service, or the products or services included in the offer.
keywordsfrom ProductDefinedTerm, Text, URLKeywords or tags used to describe some item.
logofrom ProductImageObject, URLAn associated logo.
mainEntityOfPagefrom ThingCreativeWork, URLIndicates a page (or other CreativeWork) for which this thing is the main entity being described.
manufacturerfrom ProductOrganizationThe manufacturer of the product.
materialfrom ProductProduct, Text, URLA material that something is made from, e.g.
medicineSystemfrom MedicalEntityMedicineSystemThe system of medicine that includes this MedicalEntity, for example 'evidence-based', 'homeopathic', 'chiropractic', etc.
mobileUrlfrom ProductTextThe mobileUrl property is provided for specific situations in which data consumers need to determine whether one of several provided URLs is a dedicated 'mobile site'.
modelfrom ProductProductModel, TextThe model of the product.
mpnfrom ProductTextThe Manufacturer Part Number (MPN) of the product, or the product to which the offer refers.
namefrom ThingTextThe name of the item.
negativeNotesfrom ProductItemList, ListItem, Text, WebContentProvides negative considerations regarding something, most typically in pro/con lists for reviews (alongside positiveNotes).
nsnfrom ProductTextIndicates the NATO stock number (nsn) of a Product.
offersfrom ProductDemand, OfferAn offer to provide this item&#x2014;for example, an offer to sell a product, rent the DVD of a movie, perform a service, or give away tickets to an event.
ownerfrom ThingOrganization, PersonA person or organization who owns this Thing.
patternfrom ProductDefinedTerm, TextA pattern that something has, for example 'polka dot', 'striped', 'Canadian flag'.
positiveNotesfrom ProductItemList, ListItem, Text, WebContentProvides positive considerations regarding something, for example product highlights or (alongside negativeNotes) pro/con lists for reviews.
potentialActionfrom ThingActionIndicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
productIDfrom ProductTextThe product identifier, such as ISBN.
productionDatefrom ProductDateThe date of production of the item, e.g.
purchaseDatefrom ProductDateThe date the item, e.g.
recognizingAuthorityfrom MedicalEntityOrganizationIf applicable, the organization that officially recognizes this entity as part of its endorsed system of medicine.
recycledContentPercentagefrom ProductNumberThe percentage of recycled material in the product.
releaseDatefrom ProductDateThe release date of a product or product model.
relevantSpecialtyfrom MedicalEntityMedicalSpecialtyIf applicable, a medical specialty in which this entity is relevant.
reviewfrom ProductReviewA review of the item.
reviewsfrom ProductReviewReview of the item.
sameAsfrom ThingURLURL of a reference Web page that unambiguously indicates the item's identity.
sizefrom ProductDefinedTerm, QuantitativeValue, SizeSpecification, TextA standardized size of a product or creative work, specified either through a simple textual string (for example 'XL', '32Wx34L'), a QuantitativeValue with a unitCode, or a comp...
skufrom ProductTextThe Stock Keeping Unit (SKU), i.e.
sloganfrom ProductTextA slogan or motto associated with the item.
specificationfrom ProductPropertyValueA specification of the product, often grouped by a section header/name.
studyfrom MedicalEntityMedicalStudyA medical study or trial related to this entity.
subjectOffrom ThingCreativeWork, EventA CreativeWork or Event about this Thing.
substanceOfConcernfrom ProductChemicalSubstance, DefinedTerm, Text, URLA substance of concern (SoC) contained within the product, typically based on regulatory lists like REACH or RoHS.
urlfrom ThingURLURL of the item.
weightfrom ProductMass, QuantitativeValueThe weight of the product or person.
widthfrom ProductDistance, QuantitativeValueThe width of the item.

FAQ

Where does this hierarchy come from?

From schema.org's published machine-readable vocabulary, condensed to the type and property relations and committed to this site. The release version it was built from is shown with the results.[1, 2]

Why does a type list properties it does not declare?

Because it inherits them. Every type ultimately descends from Thing, so name, url, description and image are available everywhere without being declared on each type.[1]

What do pending and attic mean next to a type?

schema.org keeps proposed terms in a pending area before they join the core vocabulary, and moves retired ones to an attic so old markup still resolves. A term in either is real, but not part of the core vocabulary.[1]