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Unified Medical Language System (UMLS)

UMLS Vocabularies

USP (USP Compendial Nomenclature) - Synopsis

Search USP in the UMLS Metathesaurus
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The United States Pharmacopeia (USP) Compendial Nomenclature is a product supported by the United States Pharmacopeial Convention.

The USP Compendial Nomenclature provides official substance and official preparation (product) naming for Food and Drug Administration (FDA)-approved drugs and their ingredients.

The USP Compendial Nomenclature contains names and identifiers of an official substance or official preparation (product) for which a monograph is provided in an official compendium, such as the United States Pharmacopeia, recognized by the US Food and Drug Administration (FDA) Food, Drug, and Cosmetic Act.

Update Frequency
The USP Compendial Nomenclature is updated monthly.

Metathesaurus Update Frequency
USP is updated in each Metathesaurus release as part of RxNorm.

Sites Consulted

  1. Compendial Nomenclature [Internet]. [place unknown: publisher unknown]; [cited 2018 September 28]. Available from
  2. Use of Drug Name Terms Policy [Internet]. [place unknown: publisher unknown]; [cited 2018 September 28]. Available from