What is the difference between vitamin D 2 and vitamin D 3 ?
There are two different types of vitamin D: D 2 (ergocalciferol) and D 3 (cholecalciferol). Vitamin D 2 is the plant form of vitamin D. When produced commercially, it is made from yeast. Prescription vitamin D products are made with vitamin D 2 . Vitamin D 3 is the type of vitamin D which is produced in our skin after exposure to sunlight. It is also the type of vitamin D which found in fatty fish such as salmon and herring.
