# Substantial Evidence of Effectiveness of New Animal Drugs
> **Food and Drug Administration** · Final rule. · Published 1999-07-28 · Effective 1999-08-27 · 64 FR 40746
## Document
- **Document number:** 99-19193
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 64 FR 40746
- **CFR reference:** 21 CFR 514
- **Publication date:** 1999-07-28
- **Effective date:** 1999-08-27
- **HHS docket:** Docket No. 97N-0435
## Abstract

The Food and Drug Administration (FDA), as directed by the Animal Drug Availability Act of 1996 (ADAA), is amending its new animal drug regulations to further define the term ``substantial evidence.'' The purpose of this final rule is to encourage the submission of new animal drug applications (NADA's) and supplemental NADA's for single ingredient and combination new animal drugs. The final rule also encourages dose range labeling.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/07/28/99-19193/substantial-evidence-of-effectiveness-of-new-animal-drugs)
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