Niacin, also known as vitamin B3, is used by the body to convert carbohydrates into energy, support the function of the nervous and digestive systems, and maintain healthy eyes, hair, and skin. Although some reports have circulated about how niacin might support prostate health, there is no scientific evidence to back up those claims. Niacin is used to help manage cholesterol, and it has been shown to relieve migraine in some people and may also help reduce blood pressure. (Al-Mohaissen 2010; Prousky 2005; Bays 2009)
The RDA is 20 mg for adults. Food sources of niacin include chicken, fish (especially tuna and salmon), crimini mushrooms, asparagus, and beef.
References
Al-Mohaissen MA et al. Niacin: from mechanisms of action to therapeutic uses. Mini Rev Med Chem 2010 Feb 19.
Bays HE et al. Blood pressure-lowering effects of extended-release niacin alone and extended-release niacin/laropiprant combination: a post hoc analysis of a 24-week, placebo-controlled trial in dyslipidemic patients. Clin Ther 2009 Jan; 31(1): 115-22.
Prousky J, Seely D. The treatment of migraines and tension-type headaches with intravenous and oral niacin (nicotinic acid): systematic review of the literature. Nutr J 2005 Jan 25; 4:3.





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