21 CFR § 520.1156Chapter I

§ 520.1156 Imidacloprid.

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Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.

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Specifications.(a) Each chewable tablet contains 7.5 or 37.5 milligrams (mg) imidacloprid.

Sponsor.(b) See No. 058198 in § 510.600(c) of this chapter.

Conditions of use in dogsAmount.(c) —(1) Administer daily one 7.5-mg chewable tablet to dogs weighing 4 to 22 pounds (lb) or one 37.5-mg chewable table to dogs weighing 23 to 110 lb.

Indications for use.(2) Kills adult fleas and is indicated for the treatment of flea infestations on dogs and puppies 10 weeks of age and older and weighing 4 lb or greater.

Limitations.(3) Do not give to puppies younger than 10 weeks of age or to dogs weighing less than 4 lb. Do not give more than one tablet a day.

[80 FR 18775, Apr. 8, 2015, as amended at 86 FR 14818, Mar. 19, 2021]

eCFR data current as of: June 10, 2026

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.