21 CFR § 530.21 - Prohibitions for food-producing animals.

---
identifier: "/us/cfr/t21/s530.21"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 530.21 - Prohibitions for food-producing animals."
title_number: 21
title_name: "Food and Drugs"
section_number: "530.21"
section_name: "Prohibitions for food-producing animals."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "530"
part_name: "EXTRALABEL DRUG USE IN ANIMALS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 1453, 1454, 1455; 21 U.S.C. 321, 331, 351, 352, 353, 355, 357, 360b, 371, 379e."
regulatory_source: "61 FR 57743, Nov. 7, 1996, unless otherwise noted."
cfr_part: "530"
---


# 530.21 Prohibitions for food-producing animals.

(a) FDA may prohibit the extralabel use of an approved new animal or human drug or class of drugs in food-producing animals if FDA determines that:

(1) An acceptable analytical method needs to be established and such method has not been established or cannot be established; or

(2) The extralabel use of the drug or class of drugs presents a risk to the public health.

(b) A prohibition may be a general ban on the extralabel use of the drug or class of drugs or may be limited to a specific species, indication, dosage form, route of administration, or combination of factors.