# Implantation or Injectable Dosage Form New Animal Drugs; Ivermectin; Ivermectin and Clorsulon
> **Food and Drug Administration** · Final rule. · Published 1999-05-17 · Effective 1999-05-17 · 64 FR 26670
## Document
- **Document number:** 99-12286
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 26670
- **CFR reference:** 21 CFR 522
- **Publication date:** 1999-05-17
- **Effective date:** 1999-05-17
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of two supplemental new animal drug applications (NADA's) filed by Merial Ltd. One supplement provides for use of ivermectin injection, and the other provides for the use of ivermectin and clorsulon injection, for 28-day persistent control of lungworms in cattle. In addition, a tolerance for ivermectin residues in cattle muscle is established.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/05/17/99-12286/implantation-or-injectable-dosage-form-new-animal-drugs-ivermectin-ivermectin-and-clorsulon)
---
*AI Analytics · CC0 1.0*