[Code of Federal Regulations] [Title 21, Volume 5] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR346.10] [Page 269-270] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF PART 346_ANORECTAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE--Table of Contents Subpart B_Active Ingredients Sec. 346.10 Local anesthetic active ingredients. The active ingredient of the product consists of any of the following when used in the concentration or within the [[Page 270]] concentration range established for each ingredient: (a) Benzocaine 5 to 20 percent. (b) Benzyl alcohol 1 to 4 percent. (c) Dibucaine 0.25 to 1 percent. (d) Dibucaine hydrochloride 0.25 to 1 percent. (e) Dyclonine hydrochloride 0.5 to 1 percent. (f) Lidocaine 2 to 5 percent. (g) Pramoxine hydrochloride 1 percent. (h) Tetracaine 0.5 to 1 percent. (i) Tetracaine hydrochloride 0.5 to 1 percent.