free and total carbamazepine ( cbz ) and carbamazepine-epoxide ( cbz-ep ) plasma levels were obtained on 113 patients with epilepsy ( 18-61 years old ) controlled on either monotherapy or coadministration with either phenobarbital ( pb ) , phenytoin ( pht ) , valproic acid ( vpa ) , or all three .
C0014544
epilepsy
C0031507
phenytoin