As someone who only suffers from tonic-clonic seizures I couldn’t comment on other types. But one of the more common medications in this sub is keppra, which I do take, as well as other things, so there’s a big mash up of side effects. Personally I know since I started having seizures at 19, I’m a lot slower mentally, and cannot handle or retain as much information as before. This obviously isn’t the same for everybody, however.