StacksVerified U.S. regulatory reference

21 CFR §520.530

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Specifications. Each milliliter contains 15 milligrams of cythioate.
  2. (b)Sponsor. See Nos. 054771 and 058198 in § 510.600 of this chapter.
  3. (c)Conditions of use—(1) Amount. 15 milligrams cythioate per 10 pounds of body weight every third day or twice a week.
    1. (2)Indications for use. Dogs, for control of fleas.
    2. (3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.