Hello, I was wondering if there is a drug that will treat my fibromyalgia and migraines without weight gain. I'm on Gabapentin 300mg 2x a day, but since I started taking it A. I am still in pain, B. My headaches are constant, and C. I have put on 40 pounds even though I work out daily and have an extremely physical job that I go to 4 days a week. I read about Toperamate; would it be weird if I asked my internal doctor to switch me to it?