in breast milk the corresponding percentages were : primidone ( 44-228 % ) , phenobarbitone ( 20-50 % ) , carbamazepine ( 32-80 % ) , phenytoin ( 46-53 % ) , ethosuximide ( 92 % ) and valproic acid ( 2-8 % ) .
C0033148
primidone
C0031412
phenobarbitone