Life Sciences

RxNorm API

The National Library of Medicine's web service for accessing RxNorm, the standardized nomenclature for clinical drugs that links names of drugs across the major U.S. drug vocabularies. Supports name-to-RxCUI resolution, NDC lookup, relationship traversal, interaction discovery via RxNav, and approximate matching.

GitHub

Documentation

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Documentation
https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html
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Documentation
Interaction API

Schemas & Data

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JSONSchema
Drug Schema

API entry from apis.yml

apis.yml Raw ↑ 
name: RxNorm API
description: The National Library of Medicine's web service for accessing RxNorm, the standardized nomenclature
  for clinical drugs that links names of drugs across the major U.S. drug vocabularies. Supports name-to-RxCUI
  resolution, NDC lookup, relationship traversal, interaction discovery via RxNav, and approximate matching.
humanURL: https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html
baseURL: https://rxnav.nlm.nih.gov/REST/
tags:
- Drug Information
- Terminology
- NLM
- RxNorm
properties:
- type: Documentation
  url: https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html
- type: Documentation
  url: https://lhncbc.nlm.nih.gov/RxNav/APIs/InteractionAPIs.html
  title: Interaction API
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/life-sciences/refs/heads/main/json-schema/drug-schema.json
  title: Drug Schema