---
kind: "section"
citation: "21 C.F.R. § 522.1083"
title: "21"
number: "522.1083"
heading: "Gonadotropin releasing factor analog-diphtheria toxoid conjugate."
url: "https://uscodex.org/cfr/21/522.1083"
---

# §522.1083. Gonadotropin releasing factor analog-diphtheria toxoid conjugate.

- (a) **Specifications.** Each milliliter (mL) of solution contains 0.2 milligrams (mg) gonadotropin releasing factor analog-diphtheria toxoid conjugate.
- (b) **Sponsor.** See No. 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in swine—**
  - (1) **Amount.** Each intact male pig or gilt should receive two 2-mL (0.4 mg) doses by subcutaneous injection. Administer the first dose no earlier than 9 weeks of age. Administer the second dose at least 4 weeks after the first dose.
  - (2) **Indications for use—**
    - (i) **Intact male pigs intended for slaughter—** For the temporary immunological castration (suppression of testicular function) and reduction of boar taint.
    - (ii) **Gilts intended for slaughter—** For the temporary suppression of estrus.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian. For reduction of boar taint, intact male pigs should be slaughtered no earlier than 3 weeks and no later than 10 weeks after the second dose.

## Notes

### Amendments

[76 FR 27889, May 13, 2011, as amended at 77 FR 4227, Jan. 27, 2012; 79 FR 16189, Mar. 25, 2014; 85 FR 45308, July 28, 2020]

### Authority

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

### Source

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

### Amendments

[76 FR 27889, May 13, 2011, as amended at 77 FR 4227, Jan. 27, 2012; 79 FR 16189, Mar. 25, 2014; 85 FR 45308, July 28, 2020]