Bupropion
"I was on venlafaxine for 4 months.  I decided to discontinue use due to its side effects (just couldn't handle weight gain,  laziness anymore). My GP had me start taking bupropion 75mg 2x a day and quit venlafaxine cold turkey.  It worked decently as a bridge to fight the nasty withdrawals from ven. Yes,  I had crazy brain zaps for a whole week. The first week it gave me a few Manic episodes,  anxiety and energy. The next week,  today i am feeling very depressed!!! I had a crying spell in front of my girlfriend for no reason.  Iam embarrassed and I lashed out at her.  Have to make it to Friday to switch to fluoxetine and hope it'll change.  God bless!!"