---
kind: "section"
citation: "21 C.F.R. § 522.1085"
title: "21"
number: "522.1085"
heading: "Guaifenesin powder for injection."
url: "https://uscodex.org/cfr/21/522.1085"
---

# §522.1085. Guaifenesin powder for injection.

- (a) **Specifications.** The product is a sterile powder containing guaifenesin. A solution is prepared by dissolving the drug in sterile water for injection to make a solution containing 50 milligrams of guaifenesin per milliliter of solution.
- (b) **Sponsors.** See Nos. 037990 and 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in horses—**
  - (1) **Amount.** Administer 1 milliliter of prepared solution per pound of body weight by rapid intravenous infusion.
  - (2) **Indications for use.** For use as a muscle relaxant.
  - (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

[79 FR 16189, Mar. 25, 2014]

### Authority

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

### Source

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

### Amendments

[79 FR 16189, Mar. 25, 2014]