# New Animal Drugs for Use in Animal Feeds; Chlortetracycline and Sulfamethazine; Chlortetracycline, Procaine Penicillin, and Sulfamethazine
> **Food and Drug Administration** · Final rule. · Published 2016-09-14 · Effective 2016-09-14 · 81 FR 63053
## Document
- **Document number:** 2016-21985
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 81 FR 63053
- **CFR reference:** 21 CFR 558
- **Publication date:** 2016-09-14
- **Effective date:** 2016-09-14
- **HHS docket:** Docket No. FDA-2016-N-0002
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect the withdrawal of approval of those parts of a new animal drug application (NADA) for a 3-way, fixed-ratio, combination drug Type A medicated article that pertain to use of the procaine penicillin component for production indications in swine and to reflect the reformulation of the Type A medicated article as a 2- way, fixed-ratio, combination drug product without penicillin.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/09/14/2016-21985/new-animal-drugs-for-use-in-animal-feeds-chlortetracycline-and-sulfamethazine-chlortetracycline)
---
*AI Analytics · CC0 1.0*