Akotin; Etacin; NA; Naotin; NH; Niacin; Nicagin; Nico-Span; Nicolar; Niconacid; Nicosode; Nicoten; Nicotinic Acid; Nicyl; Nieaeid; Pellagra-preventive Factor; Pellagramin; Vasotherm; Vitamin B5; Wampocap; Vitamin PP; V．PP