The RxClass Browser is for exploring class hierarchies to find the RxNorm drugs, ingredients, or drug components associated with each class. RxClass shows class members from sources including ATC, FDA/SPL, MED-RT, SNOMED CT and VANDF. Users can search by class name or identifier to find the RxNorm drug members or, conversely, search by RxNorm drug name or identifier to find the classes that the RxNorm drug is a member of.

RxClass browser version:

RxClass Overview and Terms of Service