# New Animal Drugs for Use in Animal Feeds; Semduramicin; Virginiamycin
> **Food and Drug Administration** · Final rule. · Published 2009-08-18 · Effective 2009-08-18 · 74 FR 41631
## Document
- **Document number:** E9-19738
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 74 FR 41631
- **CFR reference:** 21 CFR 558
- **Publication date:** 2009-08-18
- **Effective date:** 2009-08-18
- **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 an original new animal drug application (NADA) filed by Phibro Animal Health. The NADA provides for use of single-ingredient Type A medicated articles containing semduramyicin (as semduramicin sodium biomass) and virginiamycin to manufacture 2-way combination drug Type C medicated feeds for use in broiler chickens.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/08/18/E9-19738/new-animal-drugs-for-use-in-animal-feeds-semduramicin-virginiamycin)
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