Hi I had gone through the question and understand your concern. See , the common side effects of Lexapro are: 1 drowsiness, dizziness; 2 sleep problems (insomnia); 3 mild nausea, gas, heartburn, upset stomach, constipation; 4 weight changes; 5 decreased sex drive, impotence, or difficulty having an orgasm; or. 6 dry mouth, yawning, ringing in your ears. As far as you condition is concerned , Lexapro is a pretty good drug for it treatment. You can also go for pristiq , as it has almost similar function and almost similar side effects. I hope this information was of help. Let me know if you have any other queries. Wish you good health.