@pamelaz
Sorry I didn't reply earlier. Yes, I have heard of
L Theanine. It has other benefits also. Regarding seizures and
L Theanine. Naturally, when it comes to seizures there are no guarantees as you likely know. It depends on the type of seizures you are having. If they are focals especially the limbic/mesial temporal lobe then the seizure threshold may decrease. But if the focal focus is elsewhere I believe then seizure threshold is increased making seizures less likely. However, if you suffer from generalized seizures most likely your seizure threshold will increase and most likely help decrease them.
I have had thousands of seizures and if needed I would take it although I'd try to get it from a natural way if it provided enough. Things like green tea.
But don't overlook the possibility this potential side effect may not have any effect on your seizure.
Think about all the potential side effects in Keppra and Clonazepam. How many if any do you have.
Good luck,
Jake