21 CFR § 520.1855Chapter I

§ 520.1855 Ponazuril.

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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 gram of paste contains 150 milligrams (mg) ponazuril.

Sponsor.(b) See No. 000010 in § 510.600(c) of this chapter.

Conditions of use in horsesAmount.(c) —(1) Administer orally 15 mg per kilogram (kg) (6.81 mg per pound (lb)) body weight as the first dose, followed by 5 mg/kg (2.27 mg/lb) body weight once daily for a period of 27 additional days.

Indications for use.Sarcocystis neurona.(2) For the treatment of equine protozoal myeloencephalitis caused by

Limitations.(3) 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.

[66 FR 43774, Aug. 21, 2001, as amended at 79 FR 28827, May 20, 2014; 80 FR 34278, June 16, 2015; 80 FR 53459, Sept. 4, 2015; 84 FR 39183, Aug. 9, 2019]

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.