21 CFR 520.1720d
§ 520.1720d Phenylbutazone gel.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 520.1720d, § 520.1720d Phenylbutazone gel, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87269
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Full text
(a) Specifications. Each 30 grams of gel contains 4 grams of phenylbutazone.
(b) Sponsor. See No. 061133 in § 510.600(c) of this chapter. require bioequivalency and safety information.
(c) Conditions of use in horses—(1) Amount. 1 to 2 grams of phenylbutazone per 500 pounds of body weight, not to exceed 4 grams daily.
(2) Indications for use. For relief of inflammatory conditions associated with the musculoskeletal system of horses.
(3) Limitations. Do not use in horses intended for human consumption. Federal law prohibits the use of this drug in female dairy cattle 20 months of age or older. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.