# Oral Dosage Form New Animal Drugs; Trimethoprim and Sulfadiazine
> **Food and Drug Administration** · Final rule. · Published 1999-12-07 · Effective 1999-12-07 · 64 FR 68289
## Document
- **Document number:** 99-31571
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 68289
- **CFR reference:** 21 CFR 520
- **Publication date:** 1999-12-07
- **Effective date:** 1999-12-07
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of an abbreviated new animal drug application (ANADA) filed by Pharmacia & Upjohn Co. The ANADA provides for use of trimethoprim and sulfadiazine powder for control of bacterial infections of horses.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/07/99-31571/oral-dosage-form-new-animal-drugs-trimethoprim-and-sulfadiazine)
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