{"data":{"id":"us/21-cfr-524.1600b","jurisdiction":"us","citation":"21 CFR 524.1600b","heading":"b Nystatin, neomycin, thiostrepton, and triamcinolone ophthalmic ointment.","body":"(a) Specifications. Each cubic centimeter of ointment contains: 100,000 units of nystatin, neomycin sulfate equivalent to 2.5 milligrams of neomycin base, 2,500 units of thiostrepton, and 1.0 milligram of triamcinolone acetonide.\n(b) Sponsor. See No. 053501 in § 510.600(c) of this chapter.\n(c) Related tolerances. See §§ 556.430 and 556.470 of this chapter.\n(d) Conditions of use—(1) Dogs and cats—(i) Amount. Apply 1 drop of ointment to the affected eye(s) 2 or 3 times daily. Treatment may be continued for up to 2 weeks if necessary.\n(ii) Indications for use. For use as an anti-inflammatory, antipruritic, antifungal (Candida albicans), and antibacterial ointment for local therapy in keratitis and conjunctivitis.\n(iii) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.\n(2) Cattle—(i) Amount. Apply small line of ointment to the affected eye(s) once daily. Treatment may be continued for up to 2 weeks if necessary.\n(ii) Indications for use. For infectious kerato-conjunctivitis (pinkeye).\n(iii) 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 524—OPHTHALMIC AND TOPICAL 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":"ff3a46d50c7eb558fbe06302b913422adee79e7b210fea46cd961f3f1a4066a2","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-524.1600a","next":"us/21-cfr-524.1610"},"notice":"GroundRules: Original legal text. Not legal advice."}