My domestic partner has been taking prescribed Adderall for many years to combat fatigue. She does not sleep at night and is nocturnal. She does everything to avoid sleep. For the last two, three years she has supplemented her prescribed Adderall with caffeine drinks to the extent where she is never without one and drinks several cased of them a week. I'm obviously concerned and unable to talk to her about it. Each time I bring it up she replies angrily. She is under the care of a neurologist but I do not know if her neurologist knows about this mixing of Adderall and caffeine, sleep avoidance and nocturnal existence. Has anyone experienced something similiar?