Treatment of Impulsive Aggression (IA) in Adolescent With ADHD in Conjunction With Standard ADHD Treatment

Inclusion Criteria: * Otherwise, healthy non-smoking, male and females adolescents (12-17 years of age at the time of screening) with a primary diagnosis of ADHD and currently taking an optimized FDA-approved ADHD medication. * IA confirmed at screening using R-MOAS scale and Vitiello Aggression Questionnaire. Exclusion Criteria: * History or current diagnosis of epilepsy, major depressive disorder, bipolar disorder, schizophrenia and other psychotic disorders, personality disorder, Tourette's syndrome or dissociative disorder, autism spectrum disorder, pervasive developmental disorder, obsessive compulsive disorder, post-traumatic stress disorder, or intermittent explosive disorder. * Currently meeting DSM-5 criteria for pervasive developmental disorder, obsessive compulsive disorder, post-traumatic stress disorder or intermittent explosive disorder. * Known or suspected intelligence quotient (IQ) \<70, active suicidal plan/intent or active suicidal thought, criminal arrest, alcohol or drug use or pregnancy.