Tap any paragraph to write a margin note. Your notes collect in the Desk below the text and file under cases with @. The side-by-side margin rail opens on a larger screen.

Code · CFR · Title 21 — Food and Drugs · Part 520 — Oral Dosage Form New Animal Drugs · § 520.1287

§ 520.1287. Lotilaner, moxidectin, praziquantel, and pyrantel.

322 words·~1 min read·/us/cfr/t21/s§ 520.1287·

A research copy — for the controlling text, always check the official state or federal source. Not legal advice.

(a)Specifications. Each chewable tablet contains:
(1)56.25 milligrams
(mg)lotilaner, 0.056 mg moxidectin, 14.25 mg praziquantel, and 14.25 mg pyrantel (as pamoate salt);
(2)112.5 mg lotilaner, 0.113 mg moxidectin, 28.5 mg praziquantel, and 28.5 mg pyrantel (as pamoate salt);
(3)225 mg lotilaner, 0.225 mg moxidectin, 57 mg praziquantel, and 57 mg pyrantel (as pamoate salt);
(4)450 mg lotilaner, 0.45 mg moxidectin, 114 mg praziquantel, and 114 mg pyrantel (as pamoate salt); or
(5)900 mg lotilaner, 0.9 mg moxidectin, 228 mg praziquantel, and 228 mg pyrantel (as pamoate salt).
(b)Sponsor. See No. 058198 in § 510.600(c) of this chapter.
(c)Conditions of use—(1) Amount. Administer orally once a month, at the minimum dosage of 9 mg/lb (20 mg/kg) lotilaner, 0.009 mg/lb (0.02 mg/kg) moxidectin, 2.28 mg/lb (5 mg/kg) praziquantel, and 2.28 mg/lb (5 mg/kg) pyrantel (as pamoate salt).
(2)Indications for use. For the prevention of heartworm disease caused by Dirofilaria immitis and for the treatment and control of roundworm (immature adult and adult Toxocara canis and adult Toxascaris leonina), hookworm (fourth stage larvae, immature adult, and adult Ancylostoma caninum and adult Uncinaria stenocephala), and tapeworm (Dipylidium caninum, Taenia pisiformis, and Echinococcus granulosus) infections. Kills adult fleas and is indicated for the treatment and prevention of flea infestations (Ctenocephalides felis) and the treatment and control of tick infestations (Amblyomma americanum (lone star tick), Dermacentor variabilis (American dog tick), Ixodes scapularis (black-legged tick), Rhipicephalus sanguineus (brown dog tick), and Haemaphysalis longicornis (longhorned tick)) for one month in dogs and puppies 8 weeks of age and older, and weighing 3.3 pounds or greater. For the prevention of Borrelia burgdorferi infections as a direct result of killing Ixodes scapularis vector ticks.
(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. [90 FR 6800, Jan. 21, 2025, as amended at 90 FR 40969, Aug. 22, 2025; 91 FR 20341, Apr. 16, 2026]
★   the supreme law of the land   ★
Don't Tread on Me
E Pluribus Unum — out of many, one

"If you don't know your rights, you don't have any."

Marginalia · a citizen's law index
A research desk, not legal advice. Always read the cited source before relying on a summary.
Questions or an issue? support@self-law.org
disclaimerMarginalia is a research index, not a law firm. Nothing on this site is legal, tax, or financial advice and no attorney–client relationship is formed by using it. Statutes, regulations, and case law change; summaries, search results, AI output, and member posts may be incomplete, out of date, or wrong. Any interpretation drawn from material on this site should be validated by a licensed attorney in your jurisdiction before you act on it.