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Is Taking 400mg Of Niacin Daily Safe?

Will 400 mg of Niacin a day cause me harm? I am a 52 year old female and after researching, It appears Niacin may help rejuvenate my skin and hair. Is this true? I have experienced the flushing but it doesn't bother me. Will taking Niacin and getting in the sun cause a problem?<Thanks,Denise

posted on Thu, 13 Mar 2014

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

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