My husband had seuizures, two weeks back. Now, he is on medication - using 6(500mg) Keppra and 3 (100mg) Dialantin, everyday. Today, since morning he is very weak and tired and he is more sleepy and telling that he is feeling heavy headed. I am worried that why he is more tired today? He usually takes nap everyday after and before lunch, but he skipped yesterday. Does his tiredness is due to that?