21 CFR § 520.2220bChapter I

§ 520.2220b Sulfadimethoxine suspension.

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Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.

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Specifications.(a) Each milliliter of suspension contains 50 milligrams (mg) sulfadimethoxine.

Sponsors.(b) See Nos. 000061 and 054771 in § 510.600(c) of this chapter.

Conditions of use in dogs and catsAmount.(c) —(1) Administer orally 25 mg per pound of body weight, followed by 12.5 mg per pound of body weight daily until the animal is free of clinical signs for 48 hours.

Indications for use.(2) For the treatment of sulfadimethoxine-susceptible bacterial infections in dogs and cats and enteritis associated with coccidiosis in dogs.

Limitations.(3) Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[79 FR 28829, May 20, 2014, as amended at 88 FR 55564, Aug. 16, 2023]

eCFR data current as of: June 10, 2026

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.