hypersomnia
"I've taken Nuvigil for 4 days. Only other medicine I take is Effexor XR for depression.  My doctor kept telling the tiredness and fatigue was related to depression and if I could get past that I'd be okay. After trying 3 different anti-depressants and upping the dose of Effexor to more than the manufacturer's suggested dose, I decided to have a sleep study and found I have hypersomnia.  First day I took 150mg Nuvigil and couldn't go to sleep until 4am.  The next 3 days I've taken half a pill (75mg) and been pretty good alert wise and still able to fall asleep at night.  However, this morning I took half a Nuvigil and fell back asleep for 2 hours.  Maybe just need time to adjust to best dose for me.  Haven't had side effects but feel ready to go go go!"