Adderall is a prescription medication; used to treat attention and sleeping disorders. This medication is approved by the FDA, as a combination of two ingredients amphetamine and dextroamphetamine. Take directly by mouth, it takes 20-30 minutes to start working in the body. It comes to different suitable doses; Adderall 5mg, Adderll 10 mg. Adderll 15mg. Adderll XR 20 mg. Adderll 30 mg. Adderll XR 10 mg.