Hello, my 14 year son was diagnosed in Nov, 2012 with epilepsy. He hasn't been tolerating Keppra, so we are going to change to Trileptal and slowly wean him off Keppra. Has anyone had any problems tolerating Trileptal? I am nervous to switch meds, but he has been having seizures on the Keppra and has been very moody, dizzy and tired.