{"data":{"id":"us/21-cfr-349.18","jurisdiction":"us","citation":"21 CFR 349.18","heading":"Ophthalmic vasoconstrictors.","body":"The active ingredient of the product consists of one of the following, within the established concentration for each ingredient:\n(a) Ephedrine hydrochloride, 0.123 percent.\n(b) Naphazoline hydrochloride, 0.01 to 0.03 percent.\n(c) Phenylephrine hydrochloride, 0.08 to 0.2 percent.\n(d) Tetrahydrozoline hydrochloride, 0.01 to 0.05 percent.","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 349—OPHTHALMIC 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":"1b467fe83c6c4f089b61ddd73b1595b25b9808a8fa84b2710475168616df63ba","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-349.16","next":"us/21-cfr-349.20"},"notice":"GroundRules: Original legal text. Not legal advice."}