adhd
"After a few days on Nuvigil (after experiencing Provigil) I found it to be excellent for my ADHD.  Provigil made me feel anxious all day to the point I could not run or workout in comfort.  The first day on Nuvigil was the only day I had this feeling.  

The side effects for me are dry mouth and suppressed appetite.  It is so nice to be focused.  The worst effect was muscle weakness! I went from running 7 miles to not being about to run more then 7 minutes. "