Does anyone remember what the dose is of Vitamin C is that helps prevent the spread and/or flare up of RSD? I have to have surgery on my neck on my right side to removal a suspicious thyroid nodule and half of my thyroid that may be cancerous. If it is cancer, I have to have my whole thyroid out. My RSD is in my right shoulder, arm, hand, and leg already. I don't need it in my neck! I am kind of nervous about having another surgery after a major shoulder surgery caused the onset my RSD which spread quite a bit. Anyone else know any preventative things I can do? Thanks, any advice would be greatly appreciated!