ergocalciferol

What Is Ergocalciferol Made Of? Regarding the manufacturing of oral vitamin D formulations, ergocalciferol is made from ultraviolet irradiation of ergosterol in yeast. Cholecalciferol is made from irradiation of 7-dehydrocholesterol from lanolin and the chemical conversion of cholesterol. Is ergocalciferol natural? Vitamin D, as either ergocalciferol (vitamin D2) or cholecalciferol (vitamin D3), is not widely