Vitamin D3 1000IU

Doctor's Best D3 1000IU, featuring cholecalciferol, the preferred supplemental form of vitamin D. Vitamin D is known to interact with over 200 different genes in the body and thus plays a crucial regulatory role as a metabolic activator for a multitude of metabolic processes. Common supplemental forms of Vitamin D include D3 (cholecalciferol) and D2 (ergocalciferol). Vitamin D3 is the naturally occurring form in humans. Research shows that supplemental vitamin D3 (cholecalciferol) is significantly more efficient at converting to active vitamin D in the body that Vitamin D2 (ergocalciferol). This makes vitamin D3 the preferred supplemental form of this nutrient. Vitamin D to enhance and regulate immune function and support optimal cardiovascular function. Derived from lanolin from sheeps wool. 1000IU per softgel.