"i have more of a questions.  i had been on lexapro 20 for 15 years. i had one anxiety attack that lasted a week before i felt better.  i am now on viibryd the first couple of weeks were great but now i&#039;m so depressed and having anxiety.  can i just go back to lexapro? its the weekend and i don&#039;t think i can wait until monday to see my dr."