I'm on Zoloft and you can add me to the list of "burpees!"
My doctor assured me this was a common and harmless side effect and most often goes away. It's been a bit over a year for me and I'm still braying like a donkey. If this is really troublesome to you, discuss changing meds. Possibly some sort of anti-gas remedy might help or OTC digestive enzyemes, both available in health food stores. But have a face to face with your doctor before trying anything!
Peace
Greenlydia
I have been on lexapro now for close to 3 years. I have also noticed I tend to burp a lot more now that I am on these.