---
kind: "section"
citation: "21 C.F.R. § 520.2130"
title: "21"
number: "520.2130"
heading: "Spinosad."
url: "https://uscodex.org/cfr/21/520.2130"
---

# §520.2130. Spinosad.

- (a) **Specifications.** Each chewable tablet contains 140, 270, 560, 810, or 1620 milligrams (mg) spinosad.
- (b) **Sponsor.** See No. 058198 in [§ 510.600](/cfr/21/510.600.md) of this chapter.
- (c) **Special considerations.** Federal law restricts this drug to use by or on the order of a licensed veterinarian.
- (d) **Conditions of use—**
  - (1) **Dogs—**
    - (i) **Amount.** Administer tablets once a month at a recommended minimum dosage of 13.5 mg per pound (30 mg per kilogram) of body weight.
    - (ii) **Indications for use.** To kill fleas and for the prevention and treatment of flea infestations (Ctenocephalides felis) for 1 month on dogs and puppies 14 weeks of age and older and 5.0 pounds of body weight or greater.
  - (2) **Cats—**
    - (i) **Amount.** Administer tablets once a month at a minimum dosage of 22.5 mg per pound (50 mg per kilogram) of body weight.
    - (ii) **Indications for use.** To kill fleas and for the prevention and treatment of flea infestations (C. felis) for 1 month on cats and kittens 14 weeks of age and older and 4.1 pounds of body weight or greater.

## Notes

### Amendments

[77 FR 60623, Oct. 4, 2012, as amended at 81 FR 48702, July 26, 2016; 87 FR 10968, Feb. 28, 2022; 89 FR 85426, Oct. 28, 2024]

### Authority

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

### Source

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

### Amendments

[77 FR 60623, Oct. 4, 2012, as amended at 81 FR 48702, July 26, 2016; 87 FR 10968, Feb. 28, 2022; 89 FR 85426, Oct. 28, 2024]