Personally, I hated Neurontin. It made me retain water, made me loopy, and made my ankles swell. My doc switched me to TOPAMAX and low and behold, I didn't retain water, I lost weight, ALL MY PAIN WAS GONE -- AND I MEAN all of it, and I was only on 400mg per day. And I'm STILL on 400mg per day years later and it still is working. No burning, no tingling, no zapping, etc. And I had a lot of nerve damage too. I have NO side effects from Topamax, but of course that's just me. Others might have some.
You might ask your doc about this drug and see what he says. Best of luck annd God bless. Hugs, Lee