what is vitamin D2
Vitamin D2 is also known as ergocalciferol, and vitamin D3 is also known as cholecalciferol.. This is important for patients who have purchased a dietary supplement that does not indicate the specific type of vitamin D in the product by number but have listed the scientific name.uman beings do not make vitamin D2, and most healthy fish contain vitamin D3. Vitamin D3 is the same price as vitamin D2. Vitamin D3 may be less toxic than D2 because higher concentrations of D2 circulate in the blood when consumed (compared to vitamin D3).
Ergocalciferol is vitamin D2. Vitamin D is important for the absorption of calcium from the stomach and for the functioning of calcium in the body. Ergocalciferol is used to treat hypoparathyroidism (decreased functioning of the parathyroid glands).Ergocalciferol is also used to treat rickets (softening of the bones caused by vitamin D deficiency) or low levels of phosphate in the blood (hypophosphatemia).Ergocalciferol may also be used for purposes not listed in this medication guide.o not use this medication if you have ever had an allergic reaction to vitamin D, or if you have: 1  high levels of calcium in your blood (hypercalcemia); 2  high levels of vitamin D in your body (hypervitaminosis D); or. 3  any condition that makes it hard for your body to absorb nutrients from food (malabsorption).