RxNorm relationship diagram

This diagram depicts the relationships between fundamental RxNorm concepts, such as drug name. drug ingredient, and drug class. Drug names are linked to the drug ingredients that they contain. and these ingredients are grouped into drug classes.

Citation:

Using the RxNorm System: RxNorm relationship diagram. In: Rethinking Clinical Trials: A Living Textbook of Pragmatic Clinical Trials. Bethesda, MD: NIH Pragmatic Trials Collaboratory. Available at: https://rethinkingclinicaltrials.org/resources/using-the-rxnorm-system/rxnorm-tools_ltskeleton_moretext/. Updated August 31, 2015.