# New Animal Drugs; Ractopamine
> **Food and Drug Administration** · Final rule. · Published 2004-08-18 · Effective 2004-08-18 · 69 FR 51173
## Document
- **Document number:** 04-18843
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 69 FR 51173
- **CFR reference:** 21 CFR 558
- **Publication date:** 2004-08-18
- **Effective date:** 2004-08-18
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of two new animal drug applications (NADAs) filed by Elanco Animal Health. One NADA provides for use of ractopamine, melengestrol, and monensin Type A medicated articles to make three-way combination Type C medicated feeds for heifers fed in confinement for slaughter. The other NADA provides for use of ractopamine, melengestrol, monensin, and tylosin Type A medicated articles to make four-way combination Type C medicated feeds for heifers fed in confinement for slaughter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/08/18/04-18843/new-animal-drugs-ractopamine)
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