seizures
"Had my first seizure this year, put on Keppra a month later. Stopped the seizures, but makes me sleepy all the time. I have mood swings, depression, irritable and get frustrated easily. Tried to talk to my neurologist, but was told the only side effect Keppra has is being tired. Too scared to ask if I could try anything else because this is supposed to be the safest drug available."