Inhibits the binding of [3H]BTX to sodium channels
REVIEW The exact mechanism by which oxcarbazepine exerts its anticonvulsant effect is unknown. It is known that the pharmacological activity of oxcarbazepine occurs primarily through its 10-monohydroxy metabolite (MHD). In vitro studies indicate an MHD-induced blockade of voltage-sensitive sodium channels, resulting in stabilization of hyperexcited neuronal membranes, inhibition of repetitive neuronal discharges, and diminution of propagation of synaptic impulses.
Mazza M, Della Marca G, Di Nicola M, Martinotti G, Pozzi G, Janiri L, Bria P, Mazza S: Oxcarbazepine improves mood in patients with epilepsy. Epilepsy Behav. 2007 May;10(3):397-401. Epub 2007 Feb 14.