If a person has the symptoms of a lack of attention (ADHD) and sleepiness (Narcolepsy) then health experts usually prescribe Adderall 10mg. The number of people with the above symptoms is increasing at a hazardous rate. Therefore, there are different forms of medication in which the drug is sold like 5mg, 10mg, 15mg, 20mg, 25mg, and 30mg, and you must know all this before you buy Adderall online.