CFR›Title 21›Chapter I›Part 332 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 332—ANTIFLATULENT PRODUCTS FOR OVER-THE-COUNTER HUMAN USE Subparts A Subpart A—General Provisions Sections 332.1–332.3 B Subpart B—Active Ingredients Sections 332.10–332.15 C Subpart C—Labeling Sections 332.30–332.31 Authority21 U.S.C. 321, 351, 352, 353, 355, 360, 371.Source39 FR 19877, June 4, 1974, unless otherwise noted. Previous 331 Part 331—Antacid Products for Over-the-Counter (OTC) Human Use Next 333 Part 333—Topical Antimicrobial Drug Products for Over-the-Counter Human Use