---
kind: "section"
citation: "21 C.F.R. § 520.2220b"
title: "21"
number: "520.2220b"
heading: "Sulfadimethoxine suspension."
url: "https://uscodex.org/cfr/21/520.2220b"
---

# §520.2220b. Sulfadimethoxine suspension.

- (a) **Specifications.** Each milliliter of suspension contains 50 milligrams (mg) sulfadimethoxine.
- (b) **Sponsors.** See Nos. 000061 and 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in dogs and cats—**
  - (1) **Amount.** 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.
  - (2) **Indications for use.** For the treatment of sulfadimethoxine-susceptible bacterial infections in dogs and cats and enteritis associated with coccidiosis in dogs.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

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

### Authority

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

### Source

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

### Amendments

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