Effect of Pyridoxine on Behavioral Adverse Events of Levetiracetam

Inclusion Criteria: * Age≥18 years * Patients with epilepsy * Patients who are treated by levetiracetam (Levebel, Cobel darou) in recent month * Complaint of behavioral problem * Patient's consent for participation Exclusion Criteria: * History of known psychiatric disease * Pregnancy * Incidence of psychotic side effects including hallucination, psychosis, suicidal idea or attempt * Treatment with psychiatric medications * Alcohol or drug abuse * Mental retardation to the degree that intervenes comprehension and response to questionnaire