Modafinil
"I am a former college football player who has had narcolepsy for years. I have been on Provigil for over a year now. I started with the lowest dose possible and after 3-6 months am now on the highest dose possible. The medicine has little side effects for me which is great except it curbs my appetite a bit. But I find my body has become immune to the medicine as the impact becomes less and less. I take 4 pills a day and even though I am not falling asleep as much and wasting the day away, I still have no energy. When I am sitting there awake I'm just useless. I don't want to go on an amphetamine but this medicine just isn't working to well for me."