"i have been on viibryd for 2 days now and the only side effect that i have had is a lot of gas and had to use the bathroom about 10 times but it was not diarrhea. i am on 10mg for 6 days and then will go to 20mg. i felt a little tingling sensation in my head after i initially took it. but so far so good. i am also on other medicines latuda, cogentin, propranolol and ativan. no trouble sleeping last night. actually i just fell right asleep but woke up at 6am and felt very rested. "