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# Revised Guide on Ferric Oxyhydroxide ANDAs
- URL: https://www.fdaweb.com/revised-guide-on-ferric-oxyhydroxide-andas/
- Published: 2021-09-16T12:00:00.000Z
- Updated: 2026-09-14T17:14:59.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5150155

*Federal Register* notice: FDA has made available a revised draft guidance for industry entitled *Draft Guidance for Ferric Oxyhydroxide*. The document provides product-specific recommendations on the design of bioequivalence studies to support ANDAs for ferric oxyhydroxide oral tablets and intravenous injectable products. To view the notice, click [here](https://public-inspection.federalregister.gov/2021-20064.pdf?ref=fdaweb.com).