Attention Deficit Hyperactivity Disorder — Practice

A 7-year-old boy is brought by his mother with complaints of inattention, impulsivity, and hyperactivity noted both at home and school for the past 18 months. He frequently interrupts conversations, cannot sit still during class, loses his belongings, and fails to complete tasks. Cognitive testing shows normal IQ. After behavioural interventions have failed, which is the drug of choice for pharmacological management?