RxNorm API

RxNorm API from the National Library of Medicine. Provides normalized names for clinical drugs and links to related drug vocabularies. Supports lookup by RxCUI (RxNorm Concept Unique Identifier) or drug name.

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Base URL: https://rxnav.nlm.nih.gov/RxNormAPIs.html
Auth: none
Endpoints: 42
Reachable: yes
CORS: unknown
Last checked: 2026-03-14 16:09:26.366003

Links

Homepage: https://lhncbc.nlm.nih.gov/RxNav/APIs/RxNormAPIs.html
API Base: https://rxnav.nlm.nih.gov/RxNormAPIs.html
Documentation:

100.0%

Uptime (7d)

656ms

Avg latency (7d)

57

Probes (7d)

Latency (7d)

Success Rate (7d)

Topics

HEALTH, SCIENCE

Endpoints

Method Path Summary Auth Last Status Latency
GET /REST/allconcepts Get concepts by term type none 200 746ms
GET /REST/allstatus Get concepts by status none 200 1196ms
GET /REST/approximateTerm Approximate term matching none 200 588ms
GET /REST/displaynames Get display names none 200 1077ms
GET /REST/drugs Find drugs by name none 200 575ms
GET /REST/ndcproperties Get NDC properties none 200 559ms
GET /REST/relationtypes Get relationship types none 404 564ms
GET /REST/rxcui Find RxCUI by name none 200 570ms
GET /REST/rxcui/{rxcui} Get concept by RxCUI none 200 558ms
GET /REST/rxcui/{rxcui}/allProperties Get all concept properties none 400 916ms
GET /REST/rxcui/{rxcui}/allrelated Get all related concepts none 200 656ms
GET /REST/rxcui/{rxcui}/ndcs Get NDCs for concept none 200 561ms
GET /REST/rxcui/{rxcui}/properties Get concept properties none 200 566ms
GET /REST/rxcui/{rxcui}/related Get related concepts none 200 563ms
GET /REST/spellingsuggestions Get spelling suggestions none — —
GET /REST/termtypes Get term types none 200 556ms
GET /REST/version Get API version none 200 555ms
GET /allconcepts Get all concepts by term type none 200 869ms
GET /approximateTerm Approximate term search none 200 574ms
GET /brands Get brands by ingredient none 400 639ms
GET /displaynames Get display names none — —
GET /drugs Get drugs by name none 200 562ms
GET /idtypes Get identifier types none — —
GET /ndcproperties Get NDC properties none 400 554ms
GET /ndcstatus Get NDC status none 200 578ms
GET /propCategories Get property categories — — —
GET /propnames Get property names — — —
GET /relatypes Get relationship types none — —
GET /rxcui Find RxCUI by name or identifier none 200 558ms
GET /rxcui/{rxcui} Get concept name by RxCUI none 200 555ms
GET /rxcui/{rxcui}/allProperties Get all concept properties none 400 561ms
GET /rxcui/{rxcui}/allhistoricalndcs Get all historical NDCs none 200 567ms
GET /rxcui/{rxcui}/allrelated Get all related concepts none 200 666ms
GET /rxcui/{rxcui}/generic Get generic concept none — —
GET /rxcui/{rxcui}/historystatus Get concept history status none — —
GET /rxcui/{rxcui}/ndcs Get NDCs for concept none 200 558ms
GET /rxcui/{rxcui}/properties Get concept properties none 200 558ms
GET /rxcui/{rxcui}/related Get related concepts none 200 561ms
GET /sourcetypes Get source types none — —
GET /spellingsuggestions Get spelling suggestions none 200 578ms
GET /termtypes Get term types none — —
GET /version Get API version none — —