# New Animal Drugs for Use in Animal Feeds; Melengestrol; Monensin
> **Food and Drug Administration** · Final rule. · Published 2011-09-30 · Effective 2011-09-30 · 76 FR 60721
## Document
- **Document number:** 2011-25220
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 76 FR 60721
- **CFR reference:** 21 CFR 558
- **Publication date:** 2011-09-30
- **Effective date:** 2011-09-30
- **HHS docket:** Docket No. FDA-2011-N-0003
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a supplemental abbreviated new animal drug application (ANADA) filed by Ivy Laboratories, Division of Ivy Animal Health, Inc. The supplemental ANADA provides for use of increased dose levels of melengestrol acetate and monensin in two-way, combination drug Type C medicated feeds for heifers fed in confinement for slaughter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/09/30/2011-25220/new-animal-drugs-for-use-in-animal-feeds-melengestrol-monensin)
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