ummm just so you all are aware the “usual” starting dose for adderall is supposed to be only 5mg   20mg right off the bat was a 4-fold overdose by definition  and you’re supposed to increase by 5 mg each week only as necessary   40 mg per day is the maximum dose for adhd it’s 60mg for narcolepsy  you may wish to call your pharmacist or dr office for possible lower dose  in general especially for a pre-existing chronic condition it’s best to start low and titrate up slowly to be sure of the diagnosis and to avoid side effects  sources   1 i’m a doctor and did my intern year in psychiatry   2 epocrates just to double check to make sure i didn’t misremember anything