"my psychiatrist initially prescribed nuvigil to enable me to be alert and awake during the day.  i suffer from bad insomnia and i&#039;m being treated for major depressive disorder and post traumatic stress disorder.  i&#039;d taken provigil in the past and it seemed to help with depression.  yesterday i overslept and decided not to take my provigil fearing it would keep me awake even longer than usual.  that was a huge mistake, i became horribly, morbidly, depressed.  i didn&#039;t make that mistake this morning, i took my nuvigil as usual and my (worse than usual) depression is gone.  i haven&#039;t experienced any side effects but i wish nuvigil would enable me to lose weight like it does many people.  i was on abilify for a few months and gained several lbs."