Buy Adderall, Adderall pill or tablet combination medication that treats attention deficit hyperactivity disorder – ADHD. It works by changing the amounts of certain natural substances within the brain. Amphetamine/dextroamphetamine belongs to a category of medicine referred to as stimulants. It can help increase your ability to concentrate, stay focused on an activity, and control behavior problems. It may also assist you in arranging your tasks and improve your listening skills.