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Vitamin D (ergocalciferol-D2, cholecalciferol-D3, alfacalcidol) is a fat-soluble vitamin that helps your body absorb calcium and phosphorus. Having the right amount of vitamin D, calcium, and phosphorus is important for building and keeping strong bones.
Vitamin D3 is a chemical synthesized in skin when we are exposed to ultraviolet light, and has a wide range of beneficial health properties. Without adequate levels of vitamin D3, we are more at risk of mineral deficiencies, bone deformities, poor immune function and depression.