There are two main forms of vitamin D that are important for human health: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). While both forms serve similar functions in the body, there are ...
Vitamin D exists in two main forms—D2 (ergocalciferol) and D3 (cholecalciferol), with the latter being more effective at raising blood levels of the vitamin. For Vitamin D to be activated in the ...