# New Animal Drugs for Use in Animal Feeds; Ractopamine and Tylosin
> **Food and Drug Administration** · Final rule. · Published 2002-12-03 · Effective 2002-12-03 · 67 FR 71820
## Document
- **Document number:** 02-30637
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 67 FR 71820
- **CFR reference:** 21 CFR 558
- **Publication date:** 2002-12-03
- **Effective date:** 2002-12-03
## 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 use of ractopamine and tylosin single-ingredient Type A medicated articles to make combination drug Type C medicated feeds used for increased rate of weight gain, improved feed efficiency, increased carcass leanness; and for the prevention of swine dysentery in finishing swine.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/12/03/02-30637/new-animal-drugs-for-use-in-animal-feeds-ractopamine-and-tylosin)
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