Vitamin D is a fat-soluble vitamin. It generally comes in 2 forms: vitamin D2 or ergocalciferol, and vitamin D3 or cholecalciferol (the most easily assimilated form).
Vitamin D is a fat-soluble vitamin. It generally comes in 2 forms: vitamin D2 or ergocalciferol, and vitamin D3 or cholecalciferol (the most easily assimilated form).