"i&#039;ve been on pristiq for a little of a year and a half now. it has helped with my anxiety amazingly but i have gained 20 pounds from it. i&#039;ve done everything to get it off. i have always eaten healthy and i work out regularly. i cannot get off of it because then my anxiety will come back.  my doctor recommends i go to a dietitian to help me with this problem.  i was also on lexapro for a year before this and it made me gain weight as well. all i want is for an anxiety medicine. that does not have this side effect but my doctor tells me there is none."