---
kind: "section"
citation: "21 C.F.R. § 522.204"
title: "21"
number: "522.204"
heading: "Boldenone."
url: "https://uscodex.org/cfr/21/522.204"
---

# §522.204. Boldenone.

- (a) **Specifications.** Each milliliter of solution contains 25 or 50 milligrams (mg) boldenone undecylenate.
- (b) **Sponsor.** See No. 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in horses—**
  - (1) **Amount.** 0.5 mg per pound body weight by intramuscular injection. Treatment may be repeated at 3-week intervals.
  - (2) **Indications for use.** As an aid for treating debilitated horses when an improvement in weight, hair coat, or general physical condition is desired.
  - (3) **Limitations.** Do not administer to horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[70 FR 70998, Nov. 25, 2005, as amended at 79 FR 16184, Mar. 25, 2014]

### Authority

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

### Source

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

### Amendments

[70 FR 70998, Nov. 25, 2005, as amended at 79 FR 16184, Mar. 25, 2014]