---
kind: "section"
citation: "21 C.F.R. § 522.82"
title: "21"
number: "522.82"
heading: "Aminopropazine."
url: "https://uscodex.org/cfr/21/522.82"
---

# §522.82. Aminopropazine.

- (a) **Specifications.** Each milliliter of solution contains aminopropazine fumarate equivalent to 25 milligrams (mg) aminopropazine base.
- (b) **Sponsor.** See No. 000061 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use—**
  - (1) **Dogs and cats—**
    - (i) **Amount.** 1 to 2 mg per pound of body weight, repeated every 12 hours as indicated, by intramuscular or intravenous injection.
    - (ii) **Indications for use.** For reducing excessive smooth muscle contractions, such as occur in urethral spasms associated with urolithiasis.
    - (iii) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.
  - (2) **Horses—**
    - (i) **Amount.** Administer 0.25 mg per pound of body weight, repeated every 12 hours as indicated, by intramuscular or intravenous injection.
    - (ii) **Indications for use.** For reducing excessive smooth muscle contractions, such as occur in colic spasms.
    - (iii) **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

[79 FR 16183, Mar. 25, 2014]

### Authority

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

### Source

Source: 40 FR 13858, Mar. 27, 1975, unless otherwise noted.

### Amendments

[79 FR 16183, Mar. 25, 2014]