---
kind: "section"
citation: "21 C.F.R. § 520.784"
title: "21"
number: "520.784"
heading: "Doxylamine."
url: "https://uscodex.org/cfr/21/520.784"
---

# §520.784. Doxylamine.

- (a) **Specifications.** The drug is in tablet form and contains doxylamine succinate as the active drug ingredient.
- (b) **Sponsor.** See No. 000061 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use—**
  - (1) **Amount.** Horses: Administer orally 1 to 2 milligrams (mg) per pound (/lb) of body weight per day divided into 3 or 4 equal doses. Dogs and cats: Administer orally 2 to 3 mg/lb of body weight per day divided into 3 or 4 equal doses.
  - (2) **Indications for use.** For use when antihistaminic therapy may be expected to alleviate some signs of disease in horses, dogs, and cats.
  - (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

[40 FR 13838, Mar. 27, 1975, as amended at 42 FR 60140, Nov. 25, 1977; 46 FR 48642, Oct. 2, 1981; 61 FR 8873, Mar. 6, 1996; 62 FR 61624, Nov. 19, 1997; 79 FR 28821, May 20, 2014]

### Authority

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

### Source

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

### Amendments

[40 FR 13838, Mar. 27, 1975, as amended at 42 FR 60140, Nov. 25, 1977; 46 FR 48642, Oct. 2, 1981; 61 FR 8873, Mar. 6, 1996; 62 FR 61624, Nov. 19, 1997; 79 FR 28821, May 20, 2014]