{"data":{"id":"us/21-cfr-341.12","jurisdiction":"us","citation":"21 CFR 341.12","heading":"Antihistamine active ingredients.","body":"The active ingredient of the product consists of any of the following when used within the dosage limits established for each ingredient:\n(a) Brompheniramine maleate.\n(b) Chlorcyclizine hydrochloride.\n(c) Chlorpheniramine maleate.\n(d) Dexbrompheniramine maleate.\n(e) Dexchlorpheniramine maleate.\n(f) Diphenhydramine citrate.\n(g) Diphenhydramine hydrochloride.\n(h) Doxylamine succinate.\n(i) Phenindamine tartrate.\n(j) Pheniramine maleate.\n(k) Pyrilamine maleate.\n(l) Thonzylamine hydrochloride.\n(m) Triprolidine hydrochloride.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER D—DRUGS FOR HUMAN USE","PART 341—COLD, COUGH, ALLERGY, BRONCHODILATOR, AND ANTIASTHMATIC DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE","Subpart B—Active Ingredients"],"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":"8cfe2377e93ab6008deab6c73b13b115bb1345a0910e9c025e195cfad535150e","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-341.3","next":"us/21-cfr-341.14"},"notice":"GroundRules: Original legal text. Not legal advice."}