I forgot to mention that when you stop Topamax on your own, you can risk going into seizures. It is a powerful medication and you make sure you don't miss a dosage. On another board here, a man's son was in the hospital and they forgot to get him his Topamax and he went into a seizure. When you start Topamax for migraines, you start very slowly to build up and that's because it is strong and you are warned that coming off it could cause seizures. So make sure you set up a system for taking your meds so you never forget your Topamax. If you've been off it for too long, call your doctor and work with him/her to safely start back on it.