21 CFR 520.580
§ 520.580 Dichlorophene and toluene.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 520.580, § 520.580 Dichlorophene and toluene, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87123
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Full text
(a) Specifications. Each capsule contains 50 milligrams (mg) of dichlorophene and 60 mg of toluene, or multiples thereof.
(b) Sponsors. See sponsors in § 510.600(c) of this chapter for use as in paragraph (c) of this section:
(1) Nos. 017135 and 023851 for use only as a single dose.
(2) Nos. 000061, 054771, and 069043 for use in a single dose or divided-dosage regimen.
(c) Required statement. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism, and before administering to weak or debilitated animals.
(d) Conditions of use—(1) Amount. Administer as follows:
(i) Single dose: Administer 100 mg of dicholorophene and 120 mg of toluene per pound of body weight.
(ii) Divided dose: Administer 100 mg of dichlorophene and 120 mg of toluene per 5 pounds of body weight (20 and 24 mg per pound) daily for 6 days.
(2) Indications for use. For the removal of ascarids (Toxocara canis and Toxascaris leonina) and hookworms (Ancylostoma caninum and Uncinaria stenocephala); and as an aid in removing tapeworms (Taenia pisiformis, Dipylidium caninum, and Echinococcus granulosus) from dogs and cats.
(3) Limitations. Withhold solid foods and milk for at least 12 hours prior to medication and for 4 hours afterward. Repeat treatment in 2 to 4 weeks in animals subject to reinfection.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.