i take the generic of wellbutrin SR. i'm on the highest dosage now, but i started at the bottom. each time i started a dosage, i would feel AWESOME for like 2 weeks. i could focus, i had no cloudy mind, my anxiety was calmer, i could sit still, & my critical thinking skills were back! but then it would slowly just drift away, & i would kind of plateau into a really blah state. this happened with every dosage! so now i'm taking it, but i'm just waiting to go back to my psychiatrist to get something else. i'm actually supposed to be taking it twice a day, but i stopped the afternoon one, because it was making me a vegetable. i couldn't do anything at all but stare catatonically at my tv. now at least even if i'm not motivated, i can still get a few things done. not as much as a normal person, but more than i used to get done.