erythrocyte ( enh3 ) and plasma ( pnh3 ) ammonia levels , liver function tests and plasma valproate concentration were measured in 81 epileptic patients , comprising three therapeutic groups : group 1 ( 23 patients ) received sodium valproate ( vpa ) monotherapy , group 2 ( 33 patients ) received sodium valproate combined with phenytoin , carbamazepine , phenobarbitone and/or primidone and group 3 ( 25 patients ) received one or more of these anti-epileptic drugs without sodium valproate .
C0033148
primidone
C3537002
anti-epileptic drugs