I am 6 years post GBS diagnosis. I had IVIG and Plasmaphresis while I was in intensive care. IVIG is said to help with the progression but I was diagnosed within a week of my first symptom and my case still was pretty bad. My feet and lower legs got the worst of it in me. After my last appointment with my neurologist he told me that what I have gotten back is all I will ever get back. I still have very little feeling in my lower legs and feet. My toes don’t move and my feet have very little movement. I have a lot of pain in my feet and legs and I also get very hot hands, hot to the touch and lots of pain. I do have a question, how does the B12 help?