Generic Adderall 20mg; is used for the treatment of attention and focusing disorders. Real Adderall 20 mg is called Orange 20mg pill and it lasts around 4-6 hours. It works by changing a certain amount of chemical substance in the brain. Adderall 20 mg help to be more alert, awake, and focused in day-to-day life. This medication is composed of other two medications Amphetamine and Dextroamphetamine