Topiramate was the first preventative I was ever put on and it didn't help me at all, but I've heard from plenty of people for whom it worked pretty well. It's one of the first things people tell me to try when they find out about my chronic migraines (and like all migraineurs I get unsolicited advice on what works wonders all...the...time). Topiramate is like any other preventative - it doesn't work for everyone, because everyone's migraines are different, and since there is no cure for migraines, it may lessen the frequency and severity of your attacks but not stop them altogether. But it's certainly worth a try. I have been searching for a preventative that helps for 9 years with little to no success, but that's just me and my stubborn case. I sincerely hope that if you try it - or whatever else you may try - works great for you.