# New Animal Drugs for Use in Animal Feeds; Arsanilic Acid; Technical Amendment
> **Food and Drug Administration** · Final rule; technical amendment. · Published 2001-11-19 · Effective 2001-11-19 · 66 FR 57873
## Document
- **Document number:** 01-28765
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 66 FR 57873
- **CFR reference:** 21 CFR 558
- **Publication date:** 2001-11-19
- **Effective date:** 2001-11-19
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect the dose range of arsanilic acid for Type C medicated poultry feeds reported by the National Academy of Sciences/ National Research Council (NAS/NRC) Drug Efficacy Study in 1972. This action is being taken to improve the accuracy of the regulations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/11/19/01-28765/new-animal-drugs-for-use-in-animal-feeds-arsanilic-acid-technical-amendment)
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