---
kind: "section"
citation: "21 C.F.R. § 558.175"
title: "21"
number: "558.175"
heading: "Clopidol."
url: "https://uscodex.org/cfr/21/558.175"
---

# §558.175. Clopidol.

- (a) **Specifications.** Type A medicated article containing 25 percent clopidol.
- (b) **Sponsor.** See No. 016592 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Related tolerances.** See [§ 556.160](/cfr/21/556.160.md) of this chapter.
- (d) **Conditions of use—**
  - (1) **Chickens—**
  - (2) **Turkeys—**
  - (3) **Combinations.** Clopidol may also be used in combination with:
    - (i) Chlortetracycline as in [§ 558.128](/cfr/21/558.128.md).
    - (ii) Lincomycin as in [§ 558.325](/cfr/21/558.325.md).

## Notes

### Amendments

[68 FR 17882, Apr. 14, 2003, as amended at 72 FR 60551, Oct. 25, 2007; 74 FR 61028, Nov. 23, 2009; 79 FR 10965, 10982, Feb. 27, 2014; 79 FR 13545, Mar. 11, 2014; 81 FR 17609, Mar. 30, 2016; 81 FR 95004, Dec. 27, 2016; 84 FR 12495, Apr. 2, 2019; 86 FR 14822, Mar. 19, 2021; 91 FR 20343, Apr. 16, 2026]

### Authority

Authority: 21 U.S.C. 354, 360b, 360ccc, 360ccc-1, 371.

### Source

Source: 40 FR 13959, Mar. 27, 1975, unless otherwise noted.

### Amendments

[68 FR 17882, Apr. 14, 2003, as amended at 72 FR 60551, Oct. 25, 2007; 74 FR 61028, Nov. 23, 2009; 79 FR 10965, 10982, Feb. 27, 2014; 79 FR 13545, Mar. 11, 2014; 81 FR 17609, Mar. 30, 2016; 81 FR 95004, Dec. 27, 2016; 84 FR 12495, Apr. 2, 2019; 86 FR 14822, Mar. 19, 2021; 91 FR 20343, Apr. 16, 2026]