StacksVerified U.S. regulatory reference

21 CFR §520.598

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Specifications. Each tablet contains 2, 5, 10, or 20 milligrams (mg) dichlorvos.
  2. (b)Sponsor. See No. 069043 in § 510.600(c) of this chapter.
  3. (c)Conditions of use in dogs, puppies, cats, and kittens—(1) Amount. Administer orally at 5 mg dichlorvos per pound of body weight.
    1. (2)Indications for use—(i) Dogs and puppies: Removal and control of intestinal roundworms (Toxocara canis and Toxascaris leonina) and hookworms (Ancylostoma caninum and Uncinaria stenocephala).
      1. (ii)Cats and kittens: Removal and control of intestinal roundworms (Toxocara cati and Toxascaris leonina) and hookworms (Ancylostoma tubaeforme and Uncinaria stenocephala).
    2. (3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.