"my doctor gave me adderall because i cant sit still long enough to concentrate and study and do productive things at work. he gave me 10mg to take twice a day but i didn&#039;t feel any effects from the drug. i decided to take 2 10mg at the same time and still nothing. i am so sad right now because all i want to do is concentrate and study and do my job with concentration. i was really excited to take these pill but now am dissapointed. i think i am one of those people who are resistant to stimulant medication"