---
kind: "section"
citation: "21 C.F.R. § 522.2670"
title: "21"
number: "522.2670"
heading: "Yohimbine."
url: "https://uscodex.org/cfr/21/522.2670"
---

# §522.2670. Yohimbine.

- (a) **Specifications.** Each milliliter (mL) of solution contains 2 or 5 milligrams (mg) of yohimbine (as hydrochloride).
- (b) **Sponsors.** See sponsors in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter for use as in [paragraph (c)](#c) of this section.
  - (1) **No.** 059399 for use of in 2 mg/mL solution as in [paragraph (c)(1)](#c-1) of this section.
  - (2) **No.** 053923 for use of in 5 mg/mL solution as in [paragraph (c)(2)](#c-2) of this section.
- (c) **Conditions of use—**
  - (1) **Dogs—**
    - (i) **Amount.** Administer 0.05 mg per pound (0.11 mg per kilogram) of body weight by intravenous injection.
    - (ii) **Indications for use.** To reverse the effects of xylazine in dogs.
    - (iii) **Limitations.** Not for use in food-producing animals. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
  - (2) **Deer and elk—**
    - (i) **Amount.** Administer 0.2 to 0.3 mg per kilogram of body weight by intravenous injection.
    - (ii) **Indications for use.** A s an antagonist to xylazine sedation in free ranging or confined members of the family Cervidae (deer and elk).
    - (iii) **Limitations.** Do not use in domestic food-producing animals. Do not use for 30 days before or during hunting season. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[79 FR 74020, Dec. 15, 2014, as amended at 80 FR 13230, Mar. 13, 2015]

### Authority

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

### Source

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

### Amendments

[79 FR 74020, Dec. 15, 2014, as amended at 80 FR 13230, Mar. 13, 2015]