Weekly 50,000 IU was the most succesful way to restore vitamin D levels (football)

Five-Year Surveillance of Vitamin D Levels in NCAA Division I Football Players

UCLA

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Many studies have found that Vitamin D2 dereases levels of Vitamin D3

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50,000 IU weekly has been proven to fight 43 health problems

Click on a tag to see studies: 50000 IU (243) Vitamin D (11,492)