Home › CFR › Title 21 › Part 35521 CFR Part 355 — Anticaries Drug Products for Over-the-Counter Human UseSubpart A — General Provisions§ 355.1— Scope.§ 355.3— Definitions.Subpart B — Active Ingredients§ 355.10— Anticaries active ingredients.§ 355.20— Packaging conditions.Subpart C — Labeling§ 355.50— Labeling of anticaries drug products.§ 355.55— Principal display panel of all fluoride rinse drug products.§ 355.60— Professional labeling.Subpart D — Testing Procedures§ 355.70— Testing procedures for fluoride dentifrice drug products.