# Ophthalmic and Topical Dosage Form New Animal Drugs; Ivermectin
> **Food and Drug Administration** · Final rule. · Published 1997-07-21 · 62 FR 38907
## Document
- **Document number:** 97-19124
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 62 FR 38907
- **CFR reference:** 21 CFR 524
- **Publication date:** 1997-07-21
## 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 Merck Research Laboratories, Division of Merck & Co., Inc. The supplemental NADA provides for topical use of ivermectin for control of infections of gastrointestinal roundworms for 14 days following use on cattle.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/07/21/97-19124/ophthalmic-and-topical-dosage-form-new-animal-drugs-ivermectin)
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