Can an epileptic person study normally and work efficiently? what type of work is best suited for such people?

My younger brother takes around 4000mg of anti epileptic drugs daily. He was though very sharp in studies before this problem aroused however gradually his grades started falling. Can he pursue a normal education and what kind of work would be best for an epileptic person? is it required for such a person to sleep often(during the day as well)? what we as family members should do to bring him up to the mark as now a days competition is fierce.