---
kind: "section"
citation: "21 C.F.R. § 520.1802c"
title: "21"
number: "520.1802c"
heading: "Piperazine-carbon disulfide complex with phenothiazine suspension."
url: "https://uscodex.org/cfr/21/520.1802c"
---

# §520.1802c. Piperazine-carbon disulfide complex with phenothiazine suspension.

- (a) **Specifications.** Each fluid ounce contains 5 grams of piperazine-carbon disulfide complex and 0.83 gram of phenothiazine.
- (b) **Sponsor.** See No. 054771 in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter.
- (c) **Conditions of use in horses and ponies—**
  - (1) **Amount.** Administer 1 fluid ounce per 100 pounds of body weight by stomach tube or dose syringe after withholding feed overnight or for 8 to 10 hours.
  - (2) **Indications for use.** For removing ascarids (large roundworms, Parascaris equorum), bots (Gastrophilus spp.), small strongyles, and large strongyles (Strongylus spp.).
  - (3) **Limitations.** Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[45 FR 52782, Aug. 8, 1980, as amended at 78 FR 28826, May 20, 2014]

### Authority

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

### Source

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

### Amendments

[45 FR 52782, Aug. 8, 1980, as amended at 78 FR 28826, May 20, 2014]