Cannot vouch for certain brands, but I do rely on Kirkland preps that are USP certified. In searching for vitamin D, accept only D-3, and depending upon your levels, start with a minimum of 2,000 IU's per day. Your goal in about 3 months is to achieve a level of 50-70 ng/ml in your serum. (Vitamin D is fat soluble and takes time to stabilize).
Answered 8/10/2021
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I like to use supplements from TIME Lab.
Answered 8/11/2021
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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