I have taken Provigil for about a year - works great...I no longer feel like taking a nap at 10am! I can usually work full days, come home and do a few things like make dinner, etc... It keeps you alert but it doesn't really make you feel different. I sure notice if I forget to take it though. The doctor prescribed 200mg every morning but I cut it back to 100mg after a few months - it made me so wide awake that I was having trouble going to sleep at night. Good luck!
Gabe