in the amniotic fluid the corresponding ranges were : primidone ( 62-230 % ) , phenobarbitone ( 28-59 % ) , carbamazepine ( 18-45 % ) , phenytoin ( 18-60 % ) , ethosuximide ( 111 % ) and valproic acid ( 5-11 % ) .
C0033148
primidone
C0031412
phenobarbitone