Vitamin D3: No foods have adequate vitamin d (though cod liver oil might be best), so the best way to insure you get enough is to take 5-10, 000 iu of vit. D3 a day. This is the dose needed by most adults to achieve optimal blood levels of 50-60. See http://bit.Ly/1dc7vna and http://bit.Ly/1ekkvkv.
Answered 12/11/2013
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