RxNorm Files

The license agreement required for the RxNorm releases is available from: https://www.nlm.nih.gov/databases/umls.html.

The terms and conditions for using RxNorm data is available on the RxNorm Terms of Service page: https://www.nlm.nih.gov/research/umls/rxnorm/docs/termsofservice.html.

RxNorm Full Monthly Release February 3, 2025	RxNorm Weekly Updates February 2025
RxNorm_full_02032025.zip MD5 checksum: be6ad4bb4fabc0a76515e04509e216e0 RxNorm Technical Documentation	Current: RxNorm_weekly_02192025.zip Source Update: MTHSPL - 02/15/2025 MD5 checksum: 64f1a74463093894c222c802098f8153 RxNorm_weekly_02122025.zip Source Update: MTHSPL - 02/08/2025 MD5 checksum: be5536213fefa2da71ad0147a93cc04f RxNorm_weekly_02052025.zip Source Update: MTHSPL - 02/01/2025 MD5 checksum: 4d0f38e4f4f3bbdbd5f75706eba2d5ce

Current Prescribable Content Monthly Release February 3, 2025	Current Prescribable Content Weekly Updates February 2025
RxNorm_full_prescribe_02032025.zip (no license required) MD5 checksum: 79eb3bd004a88359543bd3ad6a65bbc4 Current Prescribable Content Documentation	Current: RxNorm_weekly_prescribe_02192025.zip Source Update: MTHSPL - 02/15/2025 MD5 checksum: b7cb1d9094fb9a213bb1022132ff406b RxNorm_weekly_prescribe_02122025.zip Source Update: MTHSPL - 02/08/2025 MD5 checksum: cb60cf77933f4fa51370faff299abdc8 RxNorm_weekly_prescribe_02052025.zip Source Update: MTHSPL - 02/01/2025 MD5 checksum: 4df0dc0479be5d41db392733826b8760

RxNorm files are pipe-delimited text files in Rich Release Format (RRF) with the extension ".RRF". They do not require the use of the MetamorphoSys program provided with the UMLS Knowledge Sources Files. The character set of RxNorm release files is Unicode UTF-8. If you need assistance with these files, please e-mail the RxNorm team at: rxnorminfo@nlm.nih.gov. Please read the README file for the release, which is contained in the release zip package. For additional information about RxNorm releases, including scripts for loading the RxNorm data into Oracle and MySQL databases, read the RxNorm Technical Documentation.

For users who wish to automate the download of the RxNorm releases, steps are available here: https://documentation.uts.nlm.nih.gov/automating-downloads.html. The RxNorm files are also available through generic URLs with the word "current" instead of specific dates. See below for examples.

https://download.nlm.nih.gov/umls/kss/rxnorm/RxNorm_full_current.zip
https://download.nlm.nih.gov/umls/kss/rxnorm/RxNorm_weekly_current.zip

RxNorm Previous Releases

RxNorm Release Archives for 2005-2023

Last Reviewed: February 19, 2025

Unified Medical Language System® (UMLS®)

RxNorm Previous Releases

Unified Medical Language System^® (UMLS^®)