- MedlinePlus: Niacin
Also known as nicotinic acid. Describes benefits, sources, and symptoms of deficiency.
www.nlm.nih.gov/medlineplus/ency/article/002409.htm
- Linus Pauling Institute: Niacin
Extensive overview describing how it helps the body produce energy, its interactions with tryptophan, causes and symptoms of deficiency (pellagra), sources, and more.
www.orst.edu/dept/lpi/infocenter/vitamins/niacin
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