RxNorm

RxNorm is US-specific terminology in medicine that contains all medications available on the US market.

[1] It can also be used in personal health records applications.

[citation needed] RxNorm is part of Unified Medical Language System (UMLS) terminology and is maintained by the United States National Library of Medicine (NLM).

[2] As of May 2017,[update] NLM provides six APIs related to RxNorm.

[3] There is also a web application called RxMix that allows users to access the RxNorm APIs without writing their own programs.