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# Guide on Bioequivalence for Soluble Powder Products
- URL: https://www.fdaweb.com/guide-on-bioequivalence-for-soluble-powder-products/
- Published: 2021-05-24T12:00:00.000Z
- Updated: 2026-09-14T17:00:09.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5149384

*Federal Register* notice: FDA has made available a final guidance entitled *Demonstrating* *Bioequivalence for Soluble Powder Oral Dosage Form Products and Type A Medicated Articles Containing Active Pharmaceutical Ingredients Considered To Be Soluble in Aqueous Media*. The document describes how the agency intends to evaluate requests for waiving the requirement for performing these in vivo bioequivalence studies for powdered animal drugs. To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2021-05-21/pdf/2021-10756.pdf?ref=fdaweb.com).