I have been reading a lot about taking high levels of Vitamin D for the treatment of auto-immune disorders and I wondered what kind of levels are usually prescribed? Would I have been tested for my Vit D levels? How would I know if I needed to take more? I have Subacute Cutaneous Lupus (SCLE) which is a sub group, having discoid and SLE symptoms, but no organ involvement. I take 400mg of hydroxy a day, plus one iron tablet as I am also borderline aneamic (Ferrous Fumerate 210mg). But I am still constantly tired and battling tog et through the day - and stay up longer than my children! (Also have osteoarthritis and hypermobility) Any advice would be very welcome. Thank you.