SEARCH Articles Figures Tables Absorption of niacin Assessment of Niacin Nutritional Status Dietary sources of niacin Direct Oxidation of 3-Picoline to Niacin Excretion of niacin Function and Effects of Niacin (Niacinamide, Vitamin Metabolic Functions of Niacin Metabolism of niacin Niacin Niacin mechanism of action Niacin, Pellagra, and the Role of Tryptophan Pellagra -A Disease of Tryptophan and Niacin Deficiency Pharmacological Uses of Niacin Significance of Niacin The Chemistry and Biochemistry of Niacin Urinary Excretion of Niacin Metabolites