Adderall is a combination medication that is used to treat attention-deficit hyperactivity disorder. You can buy Adderall 20mg online also for the management of narcolepsy. This drug helps you get rid of attention problems by changing or strengthening certain chemicals in the brain. As a combination drug, Adderall contains two salts, amphetamine, and dextroamphetamine. The CNS stimulants like amphetamine and dextroamphetamine affect brain and nerve chemicals that cause hyperactivity and impulse control. This drug comes in several doses you can take as required