StacksVerified U.S. regulatory reference

21 CFR §520.1158

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Specifications. Each bolus contains 10 grams of iodochlorhydroxyquin.
  2. (b)Sponsor. See No. 054771 in § 510.600 (c) of this chapter.
  3. (c)Conditions of use—(1) Amount. 1 bolus (10 grams) daily for a 1,000-pound horse.
    1. (2)Indications for use. For treatment of equine diarrhea.
    2. (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.