Hi, I have been sufferring from panic attacks for 2 years. I too have Xanax, but, I use it as a very, very, LAST resort. Ironically, I had my worst panic attack yet this morning. I had to call 911. It was interesting to see them check my vitals and tell me everything was normal...my heart rate wasn't even elevated, yet, I felt like it was racing. My chest muscles were twitching, my finger nails turned as blue as the border on this website. The technician said my adrenaline had kicked in and that's why I was twitching so. Oddly enough I still coached my son's football team this afternoon with no problems. This problem is sooooooooooooooooo frustrating!!!!