Topiramate
"Besides the tingling in the feet and hands or weight loss, I can't think of any other side effects I've had. This was an absolute miracle drug for me for the first two months I was on it before a string of horrible tension headaches started to ruin its effectiveness. My neurologist just increased my dosage. I was taking 100mg once a day. I'm now at 150mg. I'm in a size of jeans I haven't thought about for almost 20yrs. I did find that drinking more water cuts down on the tingling, too."