Pure Encapsulations Vitamin D3 gets our pick as the best high dose vitamin D option because it’s third-party tested and provides 10,000 IU per serving. If you have a severe vitamin D deficiency ...
The human body is able to synthesize Vitamin D3 through exposure to UVB rays from ... is between 600 and 2,000 international units (IU) daily. The body is most efficient at making vitamin D ...
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