---
kind: "section"
citation: "21 C.F.R. § 520.863"
title: "21"
number: "520.863"
heading: "Ethylisobutrazine."
url: "https://uscodex.org/cfr/21/520.863"
---

# §520.863. Ethylisobutrazine.

- (a) **Specifications.** Each tablet contains either 10 milligrams or 50 milligrams of ethylisobutrazine hydrochloride.
- (b) **Sponsor.** See No. 000061 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in dogs—**
  - (1) **Amount.** Administer orally 2 to 5 milligrams per pound of body weight once daily.
  - (2) **Indications for use.** As a tranquilizer.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[40 FR 13838, Mar. 27, 1975, as amended at 46 FR 48642, Oct. 2, 1981; 61 FR 8873, Mar. 6, 1996; 62 FR 61624, Nov. 19, 1997; 79 FR 28821, May 20, 2014]

### Authority

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

### Source

Source: 40 FR 13838, Mar. 27, 1975, unless otherwise noted.

### Amendments

[40 FR 13838, Mar. 27, 1975, as amended at 46 FR 48642, Oct. 2, 1981; 61 FR 8873, Mar. 6, 1996; 62 FR 61624, Nov. 19, 1997; 79 FR 28821, May 20, 2014]