Is it safe to breastfeed while taking trileptal?

No: Trileptal is pregnancy class c- meaning there are not adequate studies to determine the risk to the child. Talk with your doctor about all medicines you are on during pregnancy and breastfeeding. Unfortunately many have not been studied so you have to weigh the risks and benefits of continuing the medication.

No: The pdr says: "oxcarbazepine and its active metabolite (mhd) are excreted in human breast milk... Because of the potential for serious adverse reactions to Trileptal in nursing infants, a decision should be made about whether to discontinue nursing or to discontinue the drug in nursing women...".

Not best idea: Oxcarbezine is an older anti-seizure medication which has many adverse effects, and likely does get into breast milk in substantial amounts. Can affect sodium levels, and cause liver abnormalities. Would suggest discussion with your obstetrician and pediatrician, and figure out the best course.