About two years ago I was diagnosed with RA. The RA Dr. took tests and gave me a script for 50,000 units a day...of Vit.D. (Yes, 50,000 units a day. I was that low.) One capsule and I was sewing instead of napping!
I am now on maintenance of 1,000 units a day and doing fine. I do have Arthritis but not that bad.
Amazing difference one little vitamin made.