I have autoimmune thyroid issues, and my endocrine doctor checked my
vitamin D levels and they were at 12. My question is that I see people who's levels were higher and their doctors put them on 10,000 IU's, but I was only told to take 1,000 IU's. I don't understand why such a huge difference in dosages. It did help raise my level at 1,000, but I can't remember to what level. Does anyone know why some give only 1,000 and others 10,000?