Hi, I was wondering if anyone has been on phenobarbitol, and it affected your energy level, lethargy? My son has been on phenobarb since 12/07, and is very lethargic. He is globally delayed and I sometimes wonder if the Phenobarb is contributing. We came back from a neurology appt today and we are going to take him off phenobarb and start him on Keppra (He is also on Topomax.) I was just curious of peoples experiences.