narcolepsy
"I have been taking Nuvigil for a little over a month now.  At first I took 150mg.  It worked for 3 days and then I went back to being exhausted.  My doctor bumped the dosage to 250mg and it has been working a lot better.  Thing is I can still feel episodes of sleepiness coming on later in the afternoon and have been adding caffeine but I think its bringing on the side effects like jitteryness, nausea, fogginess, extreme dry mouth and an uncomfortable feeling in my jaw and the back of my neck.  I do not like the side effects and I am now trying to cut back on the caffiene hoping it will help.  Going to add Xyrem to my treatment to see if it will fix me."