What is the longest session of work or studying you have done with the aid of Adderall or Adderall XR? How did you feel afterwards? I have pulled a thirty hour straight study session for a test, then after the test wrote a paper for two hours, then went to a 1 and a half hour class to turn in the paper, then studied for an oral exam for an hour, then took the two hour oral exam. At that point swim trudged back to his room and passed out. Total time working/studying on adderall = 36.5 I did take a decent amount of 3-5 cigarette smoke breaks during this time, though he didn't take a break for lunch, he only ate a small sandwich during this time. I have to admit he felt pretty damn bad after all this. By the time he took his oral the 5 or so adderall began to kick in but it didn't work as well as the others. It kept him awake but his mind was so dulled from all the intense work and studying that it just wasn't working correctly. I didn't do so well on the oral, though he did get As on everything else. Overall I don't think the come down was overly harsh, but he still thinks in the future when he has this large a number of things to do on one day he will prepare well in the future.