[Code of Federal Regulations] [Title 21, Volume 3] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR172.315] [Page 45] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 172_FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN Subpart D_Special Dietary and Nutritional Additives Sec. 172.315 Nicotinamide-ascorbic acid complex. Nicotinamide-ascorbic acid complex may be safely used in accordance with the following prescribed conditions: (a) The additive is the product of the controlled reaction between ascorbic acid and nicotinamide, melting in the range 141 [deg]C to 145 [deg]C. (b) It is used as a source of ascorbic acid and nicotinamide in multivitamin preparations.