# Oral Dosage Form New Animal Drugs; Ivermectin Tablets and Chewables
> **Food and Drug Administration** · Final rule. · Published 2004-07-22 · Effective 2004-07-22 · 69 FR 43735
## Document
- **Document number:** 04-16627
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 69 FR 43735
- **CFR reference:** 21 CFR 520
- **Publication date:** 2004-07-22
- **Effective date:** 2004-07-22
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of an abbreviated new animal drug application (ANADA) filed by Phoenix Scientific, Inc. The ANADA provides for veterinary prescription use of chewable ivermectin tablets in dogs to prevent canine heartworm disease by eliminating the tissue stage of heartworm larvae (Dirofilaria immitis) for 1 month (30 days) after infection.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/07/22/04-16627/oral-dosage-form-new-animal-drugs-ivermectin-tablets-and-chewables)
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