"have been on most antidepressants since 1996, prozac worked but then wears off (just discontinued 3 weeks ago). 
viibryd at 10 mg first week helped, increased to 20mg as instructed. have weakness overall, heart palpitations, dilated pupils, annoyed easily , unable to achieve the big o, gut feels awful and bloated, cervical dystonia is aggravated. i have not had diarrhea but cramping. jittery feeling , thoughts of being better off dead for a few days now. have only been on this med for 3 weeks... not sure what to do..."