I have seizures everyday. How can I stop them?

I passed out in May 2011(lost consciosness for 10 minutes or more). When I came to, I experienced what seemed to be 3 gran mal seizures. Since that time, I’ve been having 3 to 12 seizures a day varyinh in severity. I have seen a neurologists and no abnormalities have shown up on EEG or MRI or cat scan.