Hello name is Shannon I'm 38 and have have panic attacks for 15 years now.it started when I was 21 and threw 3 blood clots to my right lung wich took them several months to find. I could not eat sleep or anything. Went from 145 pounds to 80 17 trips to the er they finally found them. I have had severe panic attacks since then. My symptoms are chest tightness shortness of breath fast heart beat and the fight or flight feeling .on 400 milligrams of welbutrin a day as well as kolonipan found nothing that works.