# New Animal Drugs; Change of Sponsor; Estradiol; Estradiol Benzoate and Testosterone Propionate; Progesterone and Estradiol Benzoate; Trenbolone Acetate; Trenbolone Acetate and Estradiol; Melengestrol; Ractopamine; Zilpaterol
> **Food and Drug Administration** · Final rule. · Published 2012-05-30 · Effective 2012-05-30 · 77 FR 31722
## Document
- **Document number:** 2012-13010
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 77 FR 31722
- **CFR reference:** 21 CFR 510
- **Publication date:** 2012-05-30
- **Effective date:** 2012-05-30
- **HHS docket:** Docket No. FDA-2012-N-0002
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect a change of sponsor for 17 new animal drug applications (NADAs) and abbreviated new animal drug applications (ANADAs) for various steroid ear implants for cattle and for melengestrol acetate liquid Type A medicated article and use in combination medicated feeds for heifers fed in confinement for slaughter from Ivy Laboratories, Division of Ivy Animal Health, Inc., to Elanco Animal Health, Division of Eli Lilly & Co.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/05/30/2012-13010/new-animal-drugs-change-of-sponsor-estradiol-estradiol-benzoate-and-testosterone-propionate)
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