US lawFederal (United States)RegulationsTitle 21 CFR — Food and DrugsChapter I — FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICESPart 333 — TOPICAL ANTIMICROBIAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USESubpart B — First Aid Antibiotic Drug Products333.10321 C.F.R. § 333.103Definitions.Last amended: 2016Year: 2026Length: 42 wordsOfficial source Cite as 21 C.F.R. § 333.103 (2026)As used in this subpart: First aid antibiotic. An antibiotic-containing drug product applied topically to the skin to help prevent infection in minor cuts, scrapes, and burns. [52 FR 47322, Dec. 11, 1987, as amended at 64 FR 403, Jan. 5, 1999]Previous21 C.F.R. § 333.101Next21 C.F.R. § 333.110