Oxcarbazepine can reduce the sodium in your body to dangerously low levels, which can cause a life-threatening electrolyte imbalance. Contact your doctor right away if you have headache, trouble concentrating, memory problems, weakness, loss of appetite, feeling unsteady, confusion, hallucinations, fainting, shallow breathing, and/or increased or more severe seizures.
Although some psychiatrists prescribe Trileptal to treat bipolar disorder, research hasn't shown definitively that it's effective.
Actually, Trileptal is an analogue of Tegretol (carbamazepine). An analogue is structurally similar to another compound, but differs slightly in its composition (such as replacing one atom by another atom of a different element).