# Animal Drugs, Feeds, and Related Products; Withdrawal of Approval of a New Animal Drug Applications; Phenylbutazone; Pyrantel; Tylosin
> **Food and Drug Administration** · Final rule. · Published 2011-03-02 · Effective 2011-03-14 · 76 FR 11330
## Document
- **Document number:** 2011-4546
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 76 FR 11330
- **CFR reference:** 21 CFR 510
- **Publication date:** 2011-03-02
- **Effective date:** 2011-03-14
- **HHS docket:** Docket No. FDA-2011-N-0003
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations by removing those portions that reflect approval of eight new animal drug applications (NADAs). In a notice published elsewhere in this issue of the Federal Register, FDA is withdrawing approval of these NADAs.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/03/02/2011-4546/animal-drugs-feeds-and-related-products-withdrawal-of-approval-of-a-new-animal-drug-applications)
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