What does the science say about Vit. D3?

D2 vs. D3 - D3 is a more potent form of vitamin D.

What does the science say about this product?

Research indicates that, compared to D2 (ergocalciferol), D3 is a more potent form of vitamin D. It is better able to raise serum 25(OH)D levels — the best measure of your body’s vitamin D status. 

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