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# Guide on Drug Bioavailability Studies
- URL: https://www.fdaweb.com/guide-on-drug-bioavailability-studies/
- Published: 2019-02-26T12:00:00.000Z
- Updated: 2026-09-15T01:07:59.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5143469

*Federal Register* notice: FDA has made available a draft guidance entitled “Bioavailability Studies Submitted in NDAs or INDs — General Considerations.” The document revises and replaces an FDA 3/2014 draft guidance on “Bioavailability and Bioequivalence Studies Submitted in NDAs or INDs — General Considerations.’’ To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2019-02-26/pdf/2019-03246.pdf?ref=fdaweb.com).