epilepsy
"I have had 4 different manufacturers of levetiracetam since September 2011. With 4 gran mal seizures since December 2011. That is the same number that I have had from 1993 to 2011 while on Dilantin and that was only because it was a doctor/patient lowered dose of Dilantin.  Keppra may work great, but not the generics."