OverviewVitamin B3, also known as Niacin or nicotinic acid, is part of the B complex which primarily converts food into energy.
Review Date 1/7/2017
Updated by: Emily Wax, RD, The Brooklyn Hospital Center, Brooklyn, NY. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.