obstructive sleep apnea/hypopnea syndrome
"This medication is AMAZING! After 20  years of excessive sleepiness I can finally make it through the day at work without falling asleep. No more nodding off at the wheel and I can enjoy the evening with my family without falling asleep. I've been in a great mood and have the energy I had when I was a kid.  I just wish I found out about this many years ago. I take 100mg early morning and 100mg early afternoon. I have had no side effects at all to date."