in 12 institutionalized epilepsy patients who had been treated 19 months ( sd +/- 5 ) with valproic acid , 27.0 mg/kg ( sd +/- 11.9 ) , phenytoin , 6.33 mg/kg ( sd +/- 1.36 ) , and co-anticonvulsants , the mean percentage of daily free valproic acid was 11.72 ( sd +/- 2.10 ) and of phenytoin 20.39 ( sd +/- 3.32 ) .
C0014544
epilepsy
C0031507
phenytoin