---
kind: "section"
citation: "21 C.F.R. § 522.1704"
title: "21"
number: "522.1704"
heading: "Pentosan polysulfate sodium."
url: "https://uscodex.org/cfr/21/522.1704"
---

# §522.1704. Pentosan polysulfate sodium.

- (a) **Specifications.** Each milliliter of solution contains 250 milligrams (mg) of pentosan polysulfate sodium.
- (b) **Sponsor.** See No. 043264 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (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.
  - (2) **Indications for use.** For the control of clinical signs associated with osteoarthritis in horses.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[88 FR 16548, Mar. 20, 2023, as amended at 88 FR 84701, Dec. 6, 2023]

### Authority

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

### Source

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

### Amendments

[88 FR 16548, Mar. 20, 2023, as amended at 88 FR 84701, Dec. 6, 2023]