GET /rxcui/{rxcui}/related

nih.gov:rxnorm-api

Summary: Get related concepts
Operation ID: getRelatedConcepts
Auth: none
Description

Get concepts related to a specified concept by relationship type or term type

Parameters (3)

rela (string, query, optional)

Relationship type (e.g., isa, has_ingredient, etc.)

rxcui (string, path, required)

RxNorm Concept Unique Identifier

tty (string, query, optional)

Term type filter

Examples (1)

TitleTypeURLAction
Get related concepts openapi-spec https://rxnav.nlm.nih.gov/REST/rxcui/1191/related?rela=isa&tty=BN

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 10:49:51.444368 200 561ms