narcolepsy
"Works very well at keeping me awake. No euphoria like amphetamines, very few side effects in fact aside from a very mild headache, which aspirin can fix. It seems like all it does is remove my chronic fatigue.. without giving extra energy. Perfect in my opinion.



Anxiety can be a problem, especially at the 250mg dose. If it is a problem, I would recommend breaking the 250mg in half and taking them several hours apart, which also helps with the late afternoon crash. 



If you have high blood pressure or heart problems, probably not a good idea to take it. 



Also, there is a generic.. not sure of the price difference."