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# Comments on Antimicrobial Drugs Used in Feed
- URL: https://www.fdaweb.com/comments-on-antimicrobial-drugs-used-in-feed/
- Published: 2021-02-23T12:00:00.000Z
- Updated: 2026-09-14T16:48:07.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5148721

*Federal Register* notice: FDA is extending the comment period on a 1/11 notice requesting comments regarding a document entitled “Potential Approach for Defining Durations of Use for Medically Important Antimicrobial Drugs Intended for Use In or On Feed: A Concept Paper.” Electronic or written comments can now be submitted by 6/11\. To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2021-02-23/pdf/2021-03532.pdf?ref=fdaweb.com).