adhd
"I used to sleep for like 12 to 24 hours straight very often for 2 years. I would sometimes fall asleep at work at dinner time. That caused me to be inattentive, distracted and sometimes more rarely sugar high hyperactivity sort of speaking. Now ever since then my problem is solved I can get up early and perform my task like normally so it works very well for both narcolepsy and ADD/ADHD. It could even work for depressed subjects. It should be obvious enough that you're all set to go whether its to go to school and working at same time or full time job."