21 CFR § 522.1086
Guaifenesin solution
June 25, 2020
(a) Specifications. Each milliliter of solution contains 50 milligrams (mg) of guaifenesin and 50 mg of dextrose.
(b) Sponsors. See Nos. 000859 and 037990 in §510.600(c) of this chapter.
(c) Conditions of use in horses—(1) Amount. Administer 1 milliliter per pound of body weight by rapid intravenous infusion.
(2) Indications for use. For use as a skeletal 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.
[79 FR 16189, Mar. 25, 2014]