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A member asked:
What to do if i take 500mg of niacin & 500 mcg of b 12 , is this too much ?
A doctor has provided 1 answer
No: The usual doses are: niacin: up to 3000 mg (3gm) 3 times per day b12: up to 1500 mcg per day.
Answered 8/1/2018
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