---
kind: "section"
citation: "21 C.F.R. § 520.1510"
title: "21"
number: "520.1510"
heading: "Nitenpyram."
url: "https://uscodex.org/cfr/21/520.1510"
---

# §520.1510. Nitenpyram.

- (a) **Specifications.** Each tablet contains 11.4 or 57 milligrams (mg) nitenpyram.
- (b) **Sponsors.** See sponsor numbers in [§ 510.600(c)](/cfr/21/510.600.md?p=c) of this chapter:
  - (1) **No.** 021091 for use as in paragraphs [(d)(1)(i)(A)](#d-1-i-A), [(d)(1)(ii)(A)](#d-1-ii-A), and (d)(2) of this section.
  - (2) **No.** 000061 for use as in paragraphs [(d)(1)(i)(B)](#d-1-i-B) and [(d)(1)(ii)(B)](#d-1-ii-B) of this section.
- (c) **Special considerations.** The concurrent use of nitenpyram tablets and flavored milbemycin/lufenuron tablets as in [paragraph (d)(1)(ii)(B)](#d-1-ii-B) of this section shall be by or on the order of a licensed veterinarian.
- (d) **Conditions of use—**
  - (1) **Dogs—**
    - (i) **Amount.**
      - (A) One 11.4-mg tablet for dogs weighing less than 25 pounds (lb) or one 57-mg tablet for dogs weighing more than 25 lb, as needed, for use as in [paragraph (d)(1)(ii)(A)](#d-1-ii-A) of this section.
      - (B) One 11.4-mg tablet for dogs weighing less than 25 lb or one 57 mg tablet for dogs weighing more than 25 lbs, once or twice weekly, for use as in [paragraph (d)(1)(ii)(B)](#d-1-ii-B) of this section.
    - (ii) **Indications for use.**
      - (A) For the treatment of flea infestations on dogs and puppies 4 weeks of age and older and 2 lbs of body weight or greater.
      - (B) The concurrent use of nitenpyram tablets as in [paragraph (d)(1)(i)(B)](#d-1-i-B) of this section with either flavored lufenuron tablets as in [§ 520.1288(c)(1)](/cfr/21/520.1288.md?p=c-1) of this chapter or flavored milbemycin and lufenuron tablets as in [§ 520.1443(d)(1)](/cfr/21/520.1443.md?p=d-1) is indicated to kill adult fleas and prevent flea eggs from hatching.
  - (2) **Cats—**
    - (i) **Amount.**
      - (A) One 11.4-mg tablet, as needed, for use as in [paragraph (d)(2)(ii)(A)](#d-2-ii-A) of this section.
      - (B) One 11.4-mg tablet, once or twice weekly, for use as in [paragraph (d)(2)(ii)(B)](#d-2-ii-B) of this section.
    - (ii) **Indications for use.**
      - (A) For the treatment of flea infestations on cats and kittens 4 weeks of age and older and 2 lbs of body weight or greater.
      - (B) The concurrent use of nitenpyram tablets as in [paragraph (d)(2)(i)(B)](#d-2-i-B) of this section with flavored lufenuron tablets as in [§ 520.1288(c)(2)](/cfr/21/520.1288.md?p=c-2) of this chapter is indicated to kill adult fleas and prevent flea eggs from hatching.

## Notes

### Amendments

[68 FR 51906, Aug. 29, 2003, as amended at 80 FR 18776, Apr. 8, 2015; 86 FR 13184, Mar. 8, 2021; 86 FR 57997, Oct. 20, 2021]

### Authority

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

### Source

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

### Amendments

[68 FR 51906, Aug. 29, 2003, as amended at 80 FR 18776, Apr. 8, 2015; 86 FR 13184, Mar. 8, 2021; 86 FR 57997, Oct. 20, 2021]