Definitions of niacin

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Definition of 'niacin'

Princeton's WordNet

1. (noun) niacin, nicotinic acid
a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract

Definition of 'niacin'

U.S. National Library of Medicine

1. niacin
A water-soluble vitamin of the B complex occurring in various animal and plant tissues. It is required by the body for the formation of coenzymes NAD and NADP. It has PELLAGRA-curative, vasodilating, and antilipemic properties.

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"niacin." Definitions.net. STANDS4 LLC, 2012. 13 February. 2012. http://www.definitions.net/definition/niacin

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