I have memory and concentration loss.I was on Lexapro and Trazodone for anxiety for 3 years and switched to Viibryd because of weight gain and lethergy. I was on 40mg. of Viibryd at first and felt stoned all the time. I backed into my garage door for example. I don't know if I should switch my meds again... you all know how transitioning feels. Please help.