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Definition of Niacin
Niacin: Nicotinic acid, one of the B-complex B vitamins. Deficiency of niacin in the diet results in the disease pellagra. See: Pellagra.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=11752
Last Editorial Review: 8/12/2003
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