{"data":{"id":"us/21-cfr-520.1453","jurisdiction":"us","citation":"21 CFR 520.1453","heading":"Moxidectin and praziquantel gel.","body":"(a) Specifications. Each milliliter of gel contains 20 milligrams (mg) (2.0 percent) moxidectin and 125 mg (12.5 percent) praziquantel.\n(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.\n(c) Special considerations. See § 500.25 of this chapter.\n(d) Conditions of use in horses and ponies—(1) Amount. Administer by mouth as a single dose: 0.4 mg moxidectin per kilogram and 2.5 mg praziquantel per kilogram (2.2 pounds) body weight.\n(2) Indications for use. For the treatment and control of large strongyles: Strongylus vulgaris (adults and L4/L5 arterial stages), S. edentatus (adult and tissue stages), Triodontophorus brevicauda (adults), and T. serratus (adults); small strongyles (adults): (Cyathostomum spp., including C. catinatum and C. pateratum; Cylicocyclus spp., including C. insigne, C. leptostomum, C. nassatus, and C. radiatus; Cylicostephanus spp., including C. calicatus, C. goldi, C. longibursatus, and C. minutus; Coronocyclus spp., including C. coronatus, C. labiatus, and C. labratus; Gyalocephalus capitatus; and Petrovinema poculatus; small strongyles: undifferentiated lumenal larvae; encysted cyathostomes (late L3 and L4 mucosal cyathostome larvae); ascarids: Parascaris equorum (adults and L4 larval stages); pinworms: Oxyuris equi (adults and L4 larval stages); hairworms: Trichostrongylus axei (adults); large-mouth stomach worms: Habronema muscae (adults); horse stomach bots: Gasterophilus intestinalis (2nd and 3rd instars) and G. nasalis (3rd instars); and tapeworms: Anoplocephala perfoliata (adults). One dose also suppresses strongyle egg production for 84 days.\n(3) Limitations. Do not use in horses intended for human consumption.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS","PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"92ae783112ff23638dfe8184812f4774331b21d6febcb7bb80ab6d99b1da2736","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-520.1452","next":"us/21-cfr-520.1454"},"notice":"GroundRules: Original legal text. Not legal advice."}