# Oral Dosage Form New Animal Drugs; Piperazine
> **Food and Drug Administration** · Final rule. · Published 1999-04-29 · Effective 1999-04-29 · 64 FR 23017
## Document
- **Document number:** 99-10696
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 23017
- **CFR reference:** 21 CFR 520
- **Publication date:** 1999-04-29
- **Effective date:** 1999-04-29
## 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 Fleming Laboratories, Inc. The supplemental NADA provides for the safe and effective use of piperazine in chickens, turkeys, and swine for the treatment of certain parasitic infections. The approval reflects compliance with the results of the National Academy of Sciences/National Research Council (NAS/NRC) Drug Efficacy Study Implementation (DESI) evaluation of the effectiveness of piperazine and FDA's conclusions concerning that evaluation. FDA also is amending the regulations to provide tolerances for piperazine residues.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/04/29/99-10696/oral-dosage-form-new-animal-drugs-piperazine)
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