---
kind: "section"
citation: "21 C.F.R. § 530.41"
title: "21"
number: "530.41"
heading: "Drugs prohibited for extralabel use in animals."
url: "https://uscodex.org/cfr/21/530.41"
---

# §530.41. Drugs prohibited for extralabel use in animals.

- (a) The following drugs, families of drugs, and substances are prohibited for extralabel animal and human drug uses in food-producing animals.
  - (1) Chloramphenicol;
  - (2) Clenbuterol;
  - (3) Diethylstilbestrol (DES);
  - (4) Dimetridazole;
  - (5) Ipronidazole;
  - (6) Other nitroimidazoles;
  - (7) **Furazolidone.**
  - (8) **Nitrofurazone.**
  - (9) Sulfonamide drugs in lactating dairy cattle (except approved use of sulfadimethoxine, sulfabromomethazine, and sulfaethoxypyridazine);
  - (10) Fluoroquinolones; and
  - (11) **Glycopeptides.**
  - (12) **Phenylbutazone in female dairy cattle 20 months of age or older.**
  - (13) **Cephalosporins (not including cephapirin) in cattle, swine, chickens, or turkeys—**
    - (i) For disease prevention purposes;
    - (ii) At unapproved doses, frequencies, durations, or routes of administration; or
    - (iii) If the drug is not approved for that species and production class.
- (b) The following drugs, families of drugs, and substances are prohibited for extralabel animal and human drug uses in nonfood-producing animals: [Reserved]
- (c) [Reserved]
- (d) The following drugs, or classes of drugs, that are approved for treating or preventing influenza A, are prohibited from extralabel use in chickens, turkeys, and ducks:
  - (1) **Adamantanes.**
  - (2) **Neuraminidase inhibitors.**

## Notes

### Amendments

[62 FR 27947, May 22, 1997, as amended at 67 FR 5471, Feb. 6, 2002; 68 FR 9530, Feb. 28, 2003; 68 FR 14134, Mar. 24, 2003; 71 FR 14377, Mar. 22, 2006; 77 FR 745, Jan. 6, 2012]

### Authority

Authority: 15 U.S.C. 1453, 1454, 1455; 21 U.S.C. 321, 331, 351, 352, 353, 355, 357, 360b, 371, 379e.

### Source

Source: 61 FR 57743, Nov. 7, 1996, unless otherwise noted.

### Amendments

[62 FR 27947, May 22, 1997, as amended at 67 FR 5471, Feb. 6, 2002; 68 FR 9530, Feb. 28, 2003; 68 FR 14134, Mar. 24, 2003; 71 FR 14377, Mar. 22, 2006; 77 FR 745, Jan. 6, 2012]