Interesting. Why do you suppose they opted for monthly supplements of 60,000 IU rather than daily or weekly supplementation?
Sorry, #4 was for you.
“ Interesting. Why do you suppose they opted for monthly supplements of 60,000 IU rather than daily or weekly supplementation?”
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I don’t know but I suspect that 60,000 IU taken at once one time each month will not have nearly as much Vitamin D usefully absorbed by the body as 2,000 IU taken each day.