"i&#039;d switched to viibryd from effexor xr october 21,2013. transition was fine, 10 mg dose for a week  i felt great..better than in years..up to 20, amazing..few side effects, soft multiple stools..not much more. was going to stay at 20mg until i started having random anxiety attacks throughout the day. so took it to 40mg..what a nightmare! i turned bipolar, paranoid, and more anxiety. back down to 20mg, was better for a bit, but now i have diarrhea daily and having 3am panic attacks. seeing doctor this week, getting off viibryd..sigh. i really wanted this one to work."