# New Animal Drugs for Use in Animal Feeds; Chlortetracycline, Procaine Penicillin, and Sulfamethazine
> **Food and Drug Administration** · Final rule. · Published 2003-08-08 · Effective 2003-08-08 · 68 FR 47237
## Document
- **Document number:** 03-20245
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 68 FR 47237
- **CFR reference:** 21 CFR 558
- **Publication date:** 2003-08-08
- **Effective date:** 2003-08-08
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect the approved status of a new animal drug application (NADA) held by Pennfield Oil Co. The NADA provides for the use of three-way, fixed combination Type A medicated articles containing chlortetracycline, procaine penicillin, and sulfamethazine to make three-way combination drug Type C medicated swine feeds used for growth promotion, increased feed efficiency, and the management of several bacterial diseases. Elsewhere in this issue of the Federal Register, FDA is publishing a proposed rule to remove certain obsolete or redundant sections of the new animal drug regulations. That proposed rule contains background information about those regulations and also for this action.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/08/08/03-20245/new-animal-drugs-for-use-in-animal-feeds-chlortetracycline-procaine-penicillin-and-sulfamethazine)
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