# Implantation or Injectable Dosage Form New Animal Drugs; Zeranol
> **Food and Drug Administration** · Final rule. · Published 1999-08-27 · Effective 1999-08-27 · 64 FR 46839
## Document
- **Document number:** 99-22312
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 46839
- **CFR reference:** 21 CFR 522
- **Publication date:** 1999-08-27
- **Effective date:** 1999-08-27
## 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 Schering-Plough Animal Health Corp. The supplemental NADA provides for use of a zeranol implant in steers fed in confinement for slaughter for improved feed efficiency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/08/27/99-22312/implantation-or-injectable-dosage-form-new-animal-drugs-zeranol)
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