Adderall is one of the most popular and commonly prescribed stimulants for patients with attention deficit hyperactivity disorder. The medication allows children and adults to focus, stay awake, and even control their impulses. People have been known to use Adderall recreationally as a stimulant drug. Since it is a prescription medication, it is illegal to buy Adderall online without a prescription. However, since ADHD affects one in 5 children today, Adderall has become very common and can be purchased without needing a prescription at all!