# Implantation or Injectable Dosage Form New Animal Drugs; Doramectin
> **Food and Drug Administration** · Final rule. · Published 1999-03-19 · Effective 1999-03-19 · 64 FR 13508
## Document
- **Document number:** 99-6670
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 13508
- **CFR reference:** 21 CFR 522
- **Publication date:** 1999-03-19
- **Effective date:** 1999-03-19
## 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 Pfizer, Inc. The supplemental NADA provides for extended use of doramectin in cattle for persistent control of nematodes including Haemonchus placei for 14 days after treatment.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/03/19/99-6670/implantation-or-injectable-dosage-form-new-animal-drugs-doramectin)
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