The study team will examine the effects of FDA approved stimulant and non-stimulant medications for ADHD, among youth with ADHD and with and without Oppositional Defiant Disorder (ODD) or Conduct Disorder (CD), on reward systems of the brain using fMRI.

The study team will determine the association between d,l-methylphenidate (MPH) therapeutic outcomes in ADHD patients and genetic variants of CES1 and reveal key associations between CES1 genotypes and the PK and PD of MPH.

The purpose of this study is to demonstrate the efficacy, safety and tolerability of SPN-810 in the treatment of impulsive aggression in patients with Attention Deficit/Hyperactivity Disorder (ADHD) in conjunction with standard ADHD treatment. Approximately 291 subjects...