What type of vitamin D? - D3 or D2?
Vitamin D2, also known as
ergocalciferol is of the plant origin.
On the other hand, Vitamin D3, also known as cholecalciferol, is of the animal origin.
In the natural state humans synthesize
vitamin D3 in their skin upon exposure to sun.
Dr. Zaidi recommends vitamin D 3 as this is the physiological type of vitamin D for the humans.