<qa>  What is the topiramate used for?Commercial topiramate will be provided in 25 mg tablets.Study medication is provided in child resistant bottles.All bottles should be returnedregardless of whether they are partial, empty or full at each visit. It is important that you follow your study doctor or his staffs instructions on when and how to take the topiramate. At Visit 4 Day 70, you will be given instructions about reducing your topiramate dose gradually for the next week. You will visit the study doctor or his staff again on Day 77 Visit 5 after you have completely stopped taking the topiramate. 