I believe it is more about B6 rather than B12 which can exacerbate neuropathy if you have too much of it. My blood levels on B6 are normal so I decided to take a multi with 12.5 of B6 in it. After a week my feet and legs are bright red and hot to the touch. I developed a red rash around my right ankle and I have pain all day. I usually have most of the burning pain at night and am able to function during the day, but not since I've been on the B6. I stopped taking it today so I will post here in about a week to see if it helps. The doctors tell you that the B vitamins in combination will work, but I wonder how many of them take the time to research the adverse reactions of B6 and neuropathy.