Oxcarbazepine (marketed as Trileptal by Novartis also Oxaleptal by Mash premiere - EGYPT ) is an anticonvulsant and mood stabilizing drug, used primarily in the treatment of epilepsy and bipolar disorder.

Oxcarbazepine is structurally a derivative of carbamazepine, adding an extra oxygen atom on the dibenzazepine ring. This difference helps reduce the impact on the liver of metabolizing the drug, and also prevents the serious forms of anemia occasionally associated with carbamazepine. Aside from this reduction in side effects, it is thought to have the same mechanism as carbamazepine - sodium channel inhibition - and is generally used to treat the same conditions. Oxcarbazepine has recently been found associated with a greater enhancement in mood and reduction in anxiety symptoms than other drugs employed to treat epilepsy.