Adderall is a combination of amphetamine and dextroamphetamine that helps improve focus, attention, and impulse control in individuals diagnosed with ADHD. It may also help people with narcolepsy stay awake during the day. Adderall is a combination of amphetamine and dextroamphetamine that helps improve focus, attention, and impulse control in individuals diagnosed with ADHD. It may also help people with narcolepsy stay awake during the day.