Niacin, or vitamin B3, is a water-soluble B vitamin found naturally in some foods, added to foods, and sold as a supplement. The two most common forms of niacin in food and supplements are nicotinic acid and nicotinamide. The body can also convert tryptophan—an amino acid—to nicotin...
IPv6 network supported
English
français
italiano
русский
español
português
Indonesia
Tiếng việt
العربية
中文
