21 CFR 520.2613
§ 520.2613 Trimethoprim and sulfadiazine powder.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 520.2613, § 520.2613 Trimethoprim and sulfadiazine powder, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87372
- Permanent ID
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Full text
(a) Specifications. Each gram of powder contains 67 milligrams (mg) trimethoprim and 333 mg sulfadiazine.
(b) Sponsors. See Nos. 054771 and 059051 in § 510.600(c) of this chapter.
(c) Conditions of use in horses—(1) Amount. Administer orally 3.75 grams of powder per 110 pounds (50 kilograms) of body weight in a small amount of feed, as a single daily dose, for 5 to 7 days.
(2) Indications for use. For control of bacterial infections of horses during treatment of acute strangles, respiratory tract infections, acute urogenital infections, wound infections, and abscesses.
(3) Limitations. Do not use in horses intended for human consumption. 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.