# RxNorm API

**Canonical:** https://apis.io/apis/life-sciences/rxnorm-api/  
**Provider:** Life Sciences — https://apis.io/providers/life-sciences/  
**Base URL:** https://rxnav.nlm.nih.gov/REST/  
**Documentation:** https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html

RxNorm API is one of 22 APIs that [Life Sciences](https://apis.io/providers/life-sciences/) publishes on the [APIs.io](https://apis.io/) network. This API exposes 1 JSON Schema definition. Tagged areas include Drug Information, Terminology, NLM, and RxNorm. The published artifact set on APIs.io includes API documentation and 1 JSON Schema.

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.

## Machine-readable artifacts (3)

- **Documentation** — https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html
- **Documentation** — https://lhncbc.nlm.nih.gov/RxNav/APIs/InteractionAPIs.html
- **JSONSchema** — https://raw.githubusercontent.com/api-evangelist/life-sciences/refs/heads/main/json-schema/drug-schema.json

## Other Life Sciences APIs (12)

- [EU Clinical Trials Register / CTIS](https://apis.io/apis/life-sciences/eu-clinical-trials-register-ctis/)
- [openFDA](https://apis.io/apis/life-sciences/openfda/)
- [DailyMed](https://apis.io/apis/life-sciences/dailymed/)
- [DrugBank API](https://apis.io/apis/life-sciences/drugbank-api/)
- [NCBI Entrez E-utilities](https://apis.io/apis/life-sciences/ncbi-entrez-e-utilities/)
- [Ensembl REST API](https://apis.io/apis/life-sciences/ensembl-rest-api/)
- [UCSC Genome Browser REST API](https://apis.io/apis/life-sciences/ucsc-genome-browser-rest-api/)
- [ClinVar (via E-utilities)](https://apis.io/apis/life-sciences/clinvar-via-e-utilities/)
- [dbSNP (via E-utilities)](https://apis.io/apis/life-sciences/dbsnp-via-e-utilities/)
- [HL7 FHIR](https://apis.io/apis/life-sciences/hl7-fhir/)
- [SMART on FHIR](https://apis.io/apis/life-sciences/smart-on-fhir/)
- [Benchling Developer Platform](https://apis.io/apis/life-sciences/benchling-developer-platform/)

## Tags

Drug Information, Terminology, NLM, RxNorm

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/life-sciences/rxnorm-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/life-sciences/.