Get Classes by RxCUI

Get the classes that directly contain a given RxNorm concept (rxcui parameter) or any product or ingredient related to it (see default paths). The result can be filtered by drug-class sources (relaSource parameter) and relations (relas parameter). The result does not include superclasses that only indirectly contain the concept or a related product or ingredient.

byRxNav (RxNorm Drug Names API)

700+calls

N/Alatency

Updated: Oct 27, 2026, 12:40 AM

Continue setup in your AI

Only public catalog IDs and a safe return path are handed to the Plugins page. This does not run the tool or confirm current availability, authorization, price, limits, or upstream status; those conditions are checked again before execution.

Selected tool: rxnav.rxclass.classes.byRxcui.list.v1
Provider scope: RxNav (RxNorm Drug Names API)
Catalog updated: 2026-10-27T00:40:01.989419+00:00
Business task: Pending verification

Continue setupYou can return to this tool page if the selection is incomplete or expires.

Run on this page: Execute is the in-site test path. Continue setup is for adding the public selection to an external AI; the two paths are tracked and validated separately.

Discover -> Inspect -> Call

Call setup

Tool IDrxnav.rxclass.classes.byRxcui.list.v1

Request parametersJSON

Before this Call

1 credit / call

The final charge is settled from actual provider usage and will appear in Usage.