Adderall is an addictive prescription stimulant with effects similar to cocaine. People regularly taking Adderall at unprescribed doses are at a high risk of becoming addicted. Adderall works by increasing dopamine levels in the brain. Dopamine, the body’s “feel good” chemical, creates a rewarding effect. Although dopamine occurs naturally, drugs like Adderall produce unnaturally high levels of it. This can cause users to come back for more.