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A member asked:
How much vit b12 and niacin do you need and how many do you take daily?
A doctor has provided 1 answer
Not much: It varies by age and sex but generally your rda (recommended daily allowance) is 2.4 micrograms of B12 and 16 milligrams of Niacin daily. A single multivitamin will generally have all of this and much more. Your food is likely adequate but if you want to be certain, take a single multivitamin each day.
Answered 6/30/2014
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