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A member asked:
Can vitamin d help you feel awake/how long does it take to work?
A doctor has provided 1 answer
Not really.: Even my mildly deficient patients take quite some time to get appreciably rises in there active d. This is because it is fat soluble. So when given d, rises are quicker in smaller, leaner patients! but now considered much more important than only one decade ago!
Answered 3/23/2018
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