"i&#039;ve been on 40 mg viibryd for 8 mos.  not too many side effects..e.g. no dry mouth, no nightmares, no high anxieties.  a little insomnia requiring benadryl. i had severe diarrhea until about a week ago but it was semi-controllable with imodium.  i feel functional but still have 2-3 day periods of depression which are difficult to wade through so it has not kept me completely stable. missing 1 dose sends me way down within 2 days....change is very abrupt so i know the drug is working.  day-to-day energy level only so-so on viibryd but i think my logical thinking has improved and words are not as difficult to find as when i was on other meds. this is huge for me. i&#039;d like a little more stability but for now the plusses &gt;negatives for viibyd"