Old and new antiepileptic drugs during pregnancy and lactation--report of a case.

We describe a case of a woman with epilepsy treated with primidone/phenobarbital (so-called "old" antiepileptic drug) and levetiracetam (so-called "new" antiepileptic drug) who was discouraged from breastfeeding, resulting in clinically significant withdrawal seizures in her newborn. As a consequence, even when two or more antiepileptic drugs are needed for the treatment of women with epilepsy, breastfeeding should be recommended, mothers should be informed about the possibility of drug effects on the neonate, and infants of mothers treated with primidone/phenobarbital should be closely monitored for possible signs of sedation.