http://epilepsy.emedtv.com/dilantin/dilantin-and-insomnia.html
It has been many years since I was on Dilantin, perhaps this may help!
True banana's by self help.
Dilation made me so sleepy. I was asleep most of the day. When I was taking it. The doctor changed the medicine to tegretol.
Need to talk to your neurologist about the medicine.
Thank you @A MyEpilepsyTeam Member
Both have tryptophan from memory...you have to warm the milk to release it.