My son has been taking Onfi for only a short time, a week, and has side effects like over sleepy and can't wake up enough to eat or drink, seems to have pain in his stomach and irritated, possibly trouble focusing and some confusion possibly also. I'm thinking I don't care how long it would take to get over these side effects It cant be worth it. Says also some things can become permanent? I am choosing to take him off Onfi and try another seizure med.He has been moaning in distress for hours today as well as half the night til he just collapsed. There's nothing I can do to help him. I can't stand that feeling andhe is not able to tell me exactly what is happening.