Vitamin D3 5000IU 365 Tablets Vitamin D Tablets Maximum Strength Vit D

The words“Vitamin D” refers to not one, butseveral forms of Vitamin D. There are biologically inactive forms ofVitamin D - Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol). It regulates the cells whichbuild and maintain bones.