Grand mal seizure on awakening best medicine?

Depends on cause: There is no good medication for seizures. We try to avoid medications if possible and just manage clinical problems to avoid seizures. Newer medications are now available with much less side effects but high expense. These issues need to be discussed with your doctor.

Depends on type: There are more than one reason for seizures to preferentially occur upon awakening (or going to sleep) such as jme (juvenile myoclonic epilepsy) and tonic seizures. If it is jme then Depakote is the drug of choice. For tonic-clonic seizures Lamictal is also used. Have a talk with your neurologist about your seizure type so you will be better suited to answer that question in full. Good luck.