---
kind: "section"
citation: "21 C.F.R. § 520.1920"
title: "21"
number: "520.1920"
heading: "Prochlorperazine and isopropamide."
url: "https://uscodex.org/cfr/21/520.1920"
---

# §520.1920. Prochlorperazine and isopropamide.

- (a) **Specifications.** Each capsules contains either:
  - (1) 3.33 milligrams of prochlorperazine (as the dimaleate) and 1.67 milligrams of isopropamide (as the iodide); or
  - (2) 10 milligrams of prochlorperazine (as the dimaleate) and 5 milligrams of isopropamide (as the iodide).
- (b) **Sponsor.** See No. 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in dogs—**
  - (1) **Amount.**
    - (i) Capsules described in [paragraph (a)(1)](#a-1) of this section are administered orally to dogs weighing from 4 to 15 pounds at the rate of 1 capsule twice daily. These capsules are administered orally to dogs weighing from 16 to 30 pounds at the rate of 1 or 2 capsules twice daily. For dogs weighing less than 4 pounds, administer orally an appropriate fraction of the contents of one of these capsules.
    - (ii) Capsules described in [paragraph (a)(2)](#a-2) of this section are given to dogs weighing 30 pounds and over at the rate of 1 capsule twice daily.
  - (2) **Indications for use.** For the treatment of gastrointestinal disturbances associated with emotional stress.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[79 FR 28827, May 20, 2014]

### Authority

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

### Source

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

### Amendments

[79 FR 28827, May 20, 2014]