Buy Adderall online Amphetamine and dextroamphetamine are central nervous system stimulants that affect chemicals in the brain and nerves that contribute to hyperactivity and impulse control. Adderall is used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. Adderall may also be used for purposes not listed in this medication guide. Warnings Adderall may be habit-forming, and this medicine is a drug of abuse. Tell your doctor if you have had problems with drug or alcohol abuse. Stimulants have caused stroke, heart attack, and sudden death in people with high blood pressure, heart disease, or a heart defect. Do not use this medicine if you have used a MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, or tranylcypromine or have received a methylene blue injection. Adderall may cause new or worsening psychosis (unusual thoughts or behavior), especially if you have a history of depression, men