Mayo Clinic
Mayo Clinic: Niacin (Vitamin B3, Nicotinic Acid)
A detailed overview of Niacin (vitamin B3). Content includes a look at its background, traditional and new uses, dosage recommendations, and more.
Precision Nutrition
Encyclopedia of Food: Vitamin B3 Niacin
Recognize the health benefits of taking vitamin B3 through the sources offered. Discover the symptoms of having too much or too little niacin.
US National Library of Medicine
Medline Plus: Niacin
This encyclopedia article on niacin, or vitamin B3, is organized into the following sections: "Illustrations," "Alternative Names," "Definition," "Function," "Food Sources," "Side Effects," and "Recommendations." Click on the thumbnail...