---
kind: "section"
citation: "21 C.F.R. § 520.530"
title: "21"
number: "520.530"
heading: "Cythioate oral liquid."
url: "https://uscodex.org/cfr/21/520.530"
---

# §520.530. Cythioate oral liquid.

- (a) **Specifications.** Each milliliter contains 15 milligrams of cythioate.
- (b) **Sponsor.** See Nos. 054771 and 058198 in [§ 510.600](/cfr/21/510.600.md) of this chapter.
- (c) **Conditions of use—**
  - (1) **Amount.** 15 milligrams cythioate per 10 pounds of body weight every third day or twice a week.
  - (2) **Indications for use.** Dogs, for control of fleas.
  - (3) **Limitations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.

## Notes

### Amendments

[49 FR 5614, Feb. 14, 1984, as amended at 67 FR 78355, Dec. 24, 2002; 79 FR 28819, May 20, 2014; 86 FR 14818, Mar. 19, 2021; 87 FR 58961, Sept. 29, 2022]

### Authority

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

### Source

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

### Amendments

[49 FR 5614, Feb. 14, 1984, as amended at 67 FR 78355, Dec. 24, 2002; 79 FR 28819, May 20, 2014; 86 FR 14818, Mar. 19, 2021; 87 FR 58961, Sept. 29, 2022]