CFR › Title 21 › Part 348Part 348 — External Analgesic Drug Products for Over-the-Counter Human UseSubpart A — General Provisions§ 348.1— Scope.§ 348.3— Definitions.Subpart B — Active Ingredients§ 348.10— Analgesic, anesthetic, and antipruritic active ingredients.Subpart C — Labeling§ 348.50— Labeling of external analgesic drug products.