StacksVerified U.S. regulatory reference

21 CFR §522.1704

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Specifications. Each milliliter of solution contains 250 milligrams (mg) of pentosan polysulfate sodium.
  2. (b)Sponsor. See No. 043264 in § 510.600(c) of this chapter.
  3. (c)Conditions of use—(1) Amount. Administer 3 mg per kilogram of body weight (1.4 mg per pound) by intramuscular injection once weekly for 4 weeks for a total of four doses.
    1. (2)Indications for use. For the control of clinical signs associated with osteoarthritis in horses.
    2. (3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.