» Niacin - The Linus Pauling Institute    Professional review of the functions, food sources, deficiency diseases, drug interactions, and recommened daily intakes of niacin.    http://lpi.oregonstate.edu/infocenter/vitamins/niacin/index.html

» Zest for Life: Vitamin B3-Niacin    Brief look at the vitamin with basic functions, good food sources, and deficiency signs.    http://www.anyvitamins.com/vitamin-b3-niacin-info.htm