Best ADHD Medication For Adults Stimulant ADHD medication improves brain function to lessen the symptoms that are common to ADHD, such as hyperactivity, lack of focus, and impulsiveness. There are many different stimulant medications that are used to treat ADHD like methylphenidate (Ritalin), Concerta, Daytrana, Focalin and Adderall. Bupropion Bupropion