Adderall XR 20 mg orange capsule is a central nervous system stimulant of the phenethylamine class and is effective and well-tolerated in treating attention deficit hyperactivity disorder (ADHD). The combination of dextroamphetamine and amphetamine is a stimulant in a class of medications that may help to improve energy and mood. People who are struggling with ADHD commonly encounter challenges that are related to hyperactivity and inattention. When Adderall 20 XR works in the body, it helps increase norepinephrine and dopamine levels in the brain, resulting in improved focus, attention span, and cognitive regulation.