I and 3 of my cousins have peripheral Neuropathy. All of us were put on Neurontin and 1 cousin is still on it. Two found Neurontin didn't help and they are taking Topamax, which they say has helped both their pain and weight. Neurontin made my head foggy so I stopped after 2 months. I tried Topamax. Within 5 minutes of taking my small first dose, I turned bright red from an allergic reaction and had to be taken to the hospital. This is the only thing that I have ever had any type of allergic reaction to so I was very surprised. Most people won't be allergic, but whenever you take any drug for the first time, make sure that someone else is present to assist you if needed.