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A member asked:
Which brand of d vitamin out there is the best or most reliable?
A doctor has provided 1 answer
Depends: Look for USP or consumerlabs certification for quality. Choose d3. However, before supplementing make sure you need it. Ask your doctor to check your blood levels. Don't supplement if you don't need something. Waste of money and may be harmful.
Answered 1/15/2015
5.7k views
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