# Implantation or Injectable Dosage Form New Animal Drugs; Progesterone and Estradiol Benzoate
> **Food and Drug Administration** · Final rule. · Published 1998-08-28 · Effective 1998-08-28 · 63 FR 45945
## Document
- **Document number:** 98-23109
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 63 FR 45945
- **CFR reference:** 21 CFR 522
- **Publication date:** 1998-08-28
- **Effective date:** 1998-08-28
## 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 Fort Dodge Animal Health. The supplemental NADA provides for reimplantation of steers fed in confinement for slaughter with a progesterone-estradiol implant 70 days following an initial implant of a lower dose implant.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/08/28/98-23109/implantation-or-injectable-dosage-form-new-animal-drugs-progesterone-and-estradiol-benzoate)
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