obstructive sleep apnea/hypopnea syndrome
"Wow, I feel normal again.  I had been living on 5 hours of sleep due to sleep apnea fears for years. I got tested and was given a CPAP machine.  I felt great for about a month, then tired.  I started sleeping 9  hours a day and drinking tons of coffee and soft drinks.  Nothing helped.  I went to my regular MD and all blood work was good.  Was told to start working out.  Problem was I was too tired.  I went back to sleep. MD gave me Nuvigil.  Like I said WOW.  I did have a few rough days when I started talking the 250mg pills, but it was nice to stay awake and have a life.  Side effects (headaches and dry mouth) are going away."