---
kind: "section"
citation: "21 C.F.R. § 520.1855"
title: "21"
number: "520.1855"
heading: "Ponazuril."
url: "https://uscodex.org/cfr/21/520.1855"
---

# §520.1855. Ponazuril.

- (a) **Specifications.** Each gram of paste contains 150 milligrams (mg) ponazuril.
- (b) **Sponsor.** See No. 000010 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in horses—**
  - (1) **Amount.** 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.
  - (2) **Indications for use.** For the treatment of equine protozoal myeloencephalitis caused by Sarcocystis neurona.
  - (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.

## Notes

### Amendments

[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]

### Authority

Authority: 21 U.S.C. 360b.

### Source

Source: 40 FR 13838, Mar. 27, 1975, unless otherwise noted.

### Amendments

[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]