{"data":{"id":"us/21-cfr-520.531","jurisdiction":"us","citation":"21 CFR 520.531","heading":"Cythioate tablets.","body":"(a) Specifications. Each tablet contains 30 or 90 milligrams (mg) cythioate.\n(b) Sponsors. See sponsor numbers in § 510.600(c) of this chapter as follows:\n(1) No. 058198 for use of 30- and 90-mg tablets.\n(2) No. 054771 for use of the 30-mg tablet.\n(c) Conditions of use—(1) Amount. 30 milligrams cythioate per 20 pounds of body weight every third day or twice a week.\n(2) Indications for use. Dogs, for control of fleas.\n(3) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.","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":"b64669538c1335b10398f90e3ef195015c79737214fed97ed7a27df61b437f7a","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-520.530","next":"us/21-cfr-520.534"},"notice":"GroundRules: Original legal text. Not legal advice."}