Posts Tagged: D3

Your Question, Expert Answer on Vitamin D: What is Ergocalciferol?


Q. My husband found out his vitamin D level was 16. His doctor prescribed 50,000 of ergocalciferol. What is ergocalciferol? A. The only prescription vitamin D in the US is “ergocalciferol” at the dose of 50,000 IU (International Units). Ergocalciferol is vitamin D2, which comes from plant sources. It is made by ultraviolet irradiation of… Read more