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antivitamin

Pronunciation: an′tē-vī′tă-min

Definition: A substance that prevents a vitamin from exerting its typical biologic effects. Most antivitamins have chemical structures like those of vitamins (pyridoxine and its antivitamin, deoxypyridoxine) and appear to function as competitive antagonists; some antivitamins produce effects, in addition, which are unrelated to vitamin antagonism.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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