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A member asked:
Are high doses of b12 (10000%) dangerous for live? what are a side efects?
A doctor has provided 1 answer
NO: There is no known toxicity of taking Vitamin B12 even in extremely high doses. See http://lpi.oregonstate.edu/mic/vitamins/vitamin-B12#toxicity However, there are some reports that B12 might worsen acne, not due to toxicity but due to how it affects bacteria in our skin- see http://www.theverge.com/2015/6/24/8839927/vitamin-b12-acne-pimples-bacteria
Answered 8/18/2015
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