{"data":{"id":"us/21-cfr-341.18","jurisdiction":"us","citation":"21 CFR 341.18","heading":"Expectorant active ingredient.","body":"The active ingredient of the product is guaifenesin when used within the dosage limits established in § 341.78(d).","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":"c0763e99cc26cfb38f4411cbdcfc1d96cc8ad3ea37b2663450ef5cb810624702","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-341.16","next":"us/21-cfr-341.20"},"notice":"GroundRules: Original legal text. Not legal advice."}