# Implantation or Injectable Dosage Form New Animal Drugs; Trenbolone and Estradiol
> **Food and Drug Administration** · Final rule. · Published 2002-02-07 · Effective 2002-02-07 · 67 FR 5724
## Document
- **Document number:** 02-2949
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 67 FR 5724
- **CFR reference:** 21 CFR 522
- **Publication date:** 2002-02-07
- **Effective date:** 2002-02-07
## 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 Intervet, Inc. The supplemental NADA provides for an additional dose of trenbolone acetate and estradiol implant for use in feedlot heifers for increased rate of weight gain and improved feed efficiency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/02/07/02-2949/implantation-or-injectable-dosage-form-new-animal-drugs-trenbolone-and-estradiol)
---
*AI Analytics · CC0 1.0*