narcolepsy
"I was diagnosed with Narcolepsy w/ cataplexy in 2009. I self drugged with energy drinks and coffee until I got my insurance back. I was on Provigil up until our insurance changed. My doctor switched me to Methlyphenidate 20mg 4x/day. If I am up and moving around it seems to work pretty good. But at work, I work a desk job and there are days that my head is bouncing off the desk from nodding. I do like this med better than provigil as it doesnt give me a headache I just wished it worked as well sitting down as standing up. Also when I get to hour 4-6 I can really feel myself slipping. Not fun."