CFR›Title 21›Chapter I›Part 335›Subpart B ContainsSection 335.10CorpusDaily eCFRDisplayed edition2026-05-22Last updated2026-05-22 Subpart B—Active Ingredients Sections 335.10 § 335.10 Antidiarrheal active ingredients. Previous A Subpart A—General Provisions Next C Subpart C—Labeling