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Table of Contents: 2021 NOVEMBER–DECEMBER No. 443

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FDA Substance Registration System to Move from NLM to FDA

FDA Substance Registration System to Move from NLM to FDA. NLM Tech Bull. 2021 Nov-Dec;(443):e4.

2021 November 19 [posted]
2021 December 17 [updated]

[Update: On December 17, 2021, this article was updated with the link to the new FDA-hosted site.]

In December 2021, the FDA Substance Registration System (FDA SRS) will move from the National Library of Medicine (NLM) to the U.S. Food and Drug Administration. FDA SRS is a resource for searching and downloading Unique Ingredient Identifiers (UNIIs) representing over 120,000 substances in FDA-regulated products. The new FDA-hosted site is accessible now, and links referencing the NLM site will begin redirecting to the new site soon. Please update your links and bookmarks with the new SRS link:

If you have any questions, please contact the NLM Support Center.

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