# New Animal Drugs for Use in Animal Feeds; Ractopamine; Tylosin
> **Food and Drug Administration** · Final rule; technical amendment. · Published 2009-12-17 · Effective 2009-12-17 · 74 FR 66914
## Document
- **Document number:** E9-29998
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 74 FR 66914
- **CFR reference:** 21 CFR 558
- **Publication date:** 2009-12-17
- **Effective date:** 2009-12-17
- **HHS docket:** Docket No. FDA-2009-N-0665
## 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 two-way combination Type B and C medicated swine feeds formulated with ractopamine hydrochloride and tylosin phosphate following use of tylosin tartrate medicated drinking water consistent with the sequential use approved for single-ingredient tylosin medicated swine feed.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/12/17/E9-29998/new-animal-drugs-for-use-in-animal-feeds-ractopamine-tylosin)
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