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# Proposed Order to Revoke Carbadox Approval
- URL: https://www.fdaweb.com/proposed-order-to-revoke-carbadox-approval/
- Published: 2020-07-20T12:00:00.000Z
- Updated: 2026-09-14T16:21:40.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5147228

*Federal Register* notice: FDA has proposed an order to revoke the approved method for detecting residues of carbadox, a carcinogenic new animal drug used in swine feed. The agency is proposing to revoke the approved method for carbadox based on its determination that it is inadequate to monitor residue of carcinogenic concern in compliance with FDA’s operational definition. To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2020-07-20/pdf/2020-15246.pdf?ref=fdaweb.com).