A member asked:

How long does it take for a vitamin to work?

A doctor has provided 1 answer
Dr. Evans Prieston answered

Specializes in Pharmacology

Vitamins: This is very difficult to answer because you do not specify what vitamin and what you need the vitamin to do for you. If you have a true vitamin deficiency, it should be corrected within a month or even sooner with daily dosing.

Answered 8/16/2017

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