Management of epilepsy in women of child bearing age

World Health Organization (2012) C_WHO
Q11: 11a). In women with epilepsy, should antiepileptic therapy be prescribed as monotherapy or polytherapy to decrease the risk of fetal malformations? 11b). Does the use of folic acid preconceptually decrease the risk of foetal malformations in women with epilepsy? 11c). Do phenytoin, phenobarbital, valproic acid or carbamazepine enter breast milk in quantities which are clinically significant to the baby?