Please be careful with this medication. I took Topamax for about 6 month and although i had no weight gain, I was beginning to lose my eyesight. Sometimes i would have to have other people drive me to work because my sight was so blurry. I couldn't read street signs or sometimes even see the car in front of me clearly. I also almost fell down a flight of stairs because of mt blurry vision. I spoke with my Dr. who prescribed something else for me and my sight has gotten better but i do have permanent damage to my eyes. if i would have known this before, i never would have taken it. I would also lose feeling in my hands.