[Code of Federal Regulations] [Title 21 Volume 5] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR346.12] [Page 262] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 346--ANORECTAL DRUG PRODUCTS FOR OVER-THE-COUNTER HUMAN USE--Table of Contents Subpart B--Active Ingredients Sec. 346.12 Vasoconstrictor active ingredients. The active ingredient of the product consists of any of the following when used in the concentration or within the concentration range established for each ingredient. (a) Ephedrine sulfate 0.1 to 1.25 percent. (b) Epinephrine 0.005 to 0.01 percent. (c) Epinephrine hydrochloride 0.005 to 0.01 percent. (d) Phenylephrine hydrochloride 0.25 percent.