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Big Bear City, CA
A 41-year-old male asked:

How much vitamin b is to much?

2 doctor answers4 doctors weighed in
Dr. Donald Jacobson
A Verified Doctoranswered
A US doctor answeredLearn more
Can you specify : Which vitamin b. There are many different b vitamins.Please resubmit your question when you have narrowed it down.
Dr. Randy Baker
Holistic Medicine 40 years experience
Which Vitamin B?: Vitamin b is not a single vitamin but a group including b1, 2, 3, 5, 6, 12, Folic Acid ; biotin.B6 may be toxic at doses of 200 mg/day. The others are generally considered non-toxic.Some report benefits of up to 2000 mg/day of b3 ; b5 ; those doses appear to be safe. There's no known need for more than 100 mg of b1 or b2/day.Potential benefits of up to 10 mg of folate (folic acid) ; 20 mg of biotin.High B12 is safe.

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Last updated Jan 1, 2018
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