Alternatives for a friend

New here and don't know anything about epilepsy/seizures. I have a friend who had a Grand Mal seizure a few months ago. He had them as a kid and it recently came back. He's taking levetiracetam which has been affecting his short term memory pretty badly. I have my own unrelated condition and through researching and spending time on HealingWell found an alternative treatment which helped my disease. So naturally I'm wondering if there are any alternatives to this medicine out there for him to consider, or any supplements that would help minimize the adverse effects of his current medication.