narcolepsy
"I was diagnosed with Narcolepsy when I was 17 and still in high school. That was about 14 years ago. Out of those 14 years, ten of them have been spent on Provigil. It has obviously worked for me. I take 200mg 3 x a day - One in the morning and two at lunchtime. I haven't had any side effects, other than not being ready for bed at night but that could be me just not wanting to go to bed. All in all Provigil keeps me awake and functioning. Oh, I do agree with everyone about the cost - it's not cheap."