Topamax shouldn't give you a brain 'buzz', but it did cause me to lose my short term memory for about 3 months (14 wks) until I stopped taking it. I titrated up at 25 mg/wk - up to 350mg/day, but never got to my doc's goal, of 400mg/day. I quit before then. It was a walking nightmare for me, but others have had successful results with it.