21 CFR 520.763b
§ 520.763b Dithiazanine powder.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 520.763b, § 520.763b Dithiazanine powder, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87140
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Full text
(a) Specifications. Each tablespoon of powder contains 200 milligrams (mg) dithiazanine iodide.
(b) Sponsor. See No. 069043 in § 510.600(c) of this chapter.
(c) Conditions of use in dogs—(1) Indications for use and amount. Administer orally by mixing in food as follows:
(i) For large roundworms (Toxocara canis, Toxascaris leonina): 10 mg per pound (/lb) of body weight for 3 to 5 days;
(ii) For hookworms (Ancylostoma caninum, Uncinaria stenocephala) and whipworms (Trichuris vulpis): 10 mg/lb of body weight for 7 days;
(iii) For Strongyloides (Strongyloides canis, Strongyloides stercoralis): 10 mg/lb of body weight for 10 to 12 days;
(iv) For heartworm microfilariae (Dirofilaria immitus): 3 to 5 mg/lb of body weight for 7 to 10 days. Treatment for heartworm microfilariae should follow 6 weeks after therapy for adult worms.
(2) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.