"i have been on the generic version of wellbutrin xl since july 1, 2015. it took about a week for me to notice any change but it was definitely for the better. i started to feel like my old self again. happy, fun, energetic, and social. every once in a while i still have a bad day but it&#039;s much more manageable now. i haven&#039;t experienced any negative side effects and have actually lost 30lbs since i started taking it. overall, i am doing much better now that i am on wellbutrin."