chronic fatigue syndrome
"Started taking this for extreme tiredness a week ago after my exhaustion level rose to unacceptable levels. In previous Multiple Sclerosis episodes I had been on Provigil, but stopped taking it due to severe headaches, and found I didn't need them anymore anyway. So far I haven't had any headaches and my mental alertness is significantly higher. My physical energy is still low, but has improved some. I can make it through a quick shopping trip without having to sit down and rest. I'm hoping that continued use of the medicine will build up my endurance level over time."