"i switched to wellbutrin after a year of zoloft mostly due to weight gain (i&#039;d gained about 20 lbs. in a year). i started taking wellbutrin 2x a day with a plan to eventually increase to extended release but the meds kept me up all night. i got maybe 4 hours of sleep a night even with zzzquil. my sleep was extremely restless and i woke up about every hour. i called my doctor and asked if i could switch to the extended release version but she said it would probably be the same situation. i did like how the meds made me feel. very little depression and i felt super energized and productive. honestly i was almost too wired; i was very jittery and almost a bit manic."