"i credit wellbutrin for my life. started taking 150mg wellbutrin sr 15 years ago to combat the sleepy side effect of prozac (taken for depression). about a year later i dropped the prozac (because of sexual side effects). the wellbutrin is enough to keep me normal. over the 14 years i have tried 1: the no name brand (almost a disaster- made me sleepy &amp; more depressed-fortunately i figured it out before getting suicidal) 2: the name brand long acting version- again made me sleepy and more depressed. 3. took 2 by accident once or twice- ok until it wears off, then withdrawal feeling/depressed. 4. sometimes i take one in the afternoon (when i am unemployed and more depressed) this works pretty well provided i take it before 3pm- or keeps me awake."