"i had been on lexapro for over a year and it was working great with the exception of having zero libido. with my relationship at stake i decided to try pristiq. after about a week i realized that i was back to my old irritable, pre-medicated self. i have been crying at the drop of a hat, snapping on loved ones, and i have been nauseous almost everyday. not to mention i went from 125 pounds to 137 pounds in a month. i talked to my doctor today and she suggested trying viibryd."