Niacin (vitamin B3) flush

Humberto

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Joined
Jan 1, 2012
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I took 200 mg of niacin with breakfast but it seemed to do nothing. Then I took another 200 mg on an empty stomach about a half hour ago.

My neck, upper back, arms and face have turned red and are burning quite badly.

I find this amusing. I was expecting this to happen but not nearly as severe.

The flush is caused by the dilation of blood vessels. It is supposed to be harmless bar the burning or itching.
 
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