# New Animal Drugs for Use in Animal Feed; Zilpaterol
> **Food and Drug Administration** · Final rule. · Published 2008-03-18 · Effective 2008-03-18 · 73 FR 14385
## Document
- **Document number:** E8-5450
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 73 FR 14385
- **CFR reference:** 21 CFR 558
- **Publication date:** 2008-03-18
- **Effective date:** 2008-03-18
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a new animal drug application (NADA) filed by Intervet, Inc. The NADA provides for use of approved, single-ingredient zilpaterol hydrochloride and monensin U.S.P. Type A medicated articles to make two-way combination Type B and Type C medicated feeds for cattle fed in confinement for slaughter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/03/18/E8-5450/new-animal-drugs-for-use-in-animal-feed-zilpaterol)
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