# New Animal Drugs; Ractopamine
> **Food and Drug Administration** · Final rule. · Published 2007-10-05 · Effective 2007-10-05 · 72 FR 56896
## Document
- **Document number:** E7-19732
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 72 FR 56896
- **CFR reference:** 21 CFR 556
- **Publication date:** 2007-10-05
- **Effective date:** 2007-10-05
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a supplemental new animal drug application (NADA) filed by Elanco Animal Health. The supplemental NADA provides for an increased level of monensin in four-way combination Type C medicated feeds containing ractopamine, melengestrol, monensin, and tylosin for heifers fed in confinement for slaughter, a revision to bacterial pathogen nomenclature, and an increase in liver tolerance.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/10/05/E7-19732/new-animal-drugs-ractopamine)
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