Have you ever considered EMDR therapy? I've been having treatment for about 2 months and the anxiety has all but vanished. I understand that not everybody responds as well to this as others. I was pretty ripe for it - very desperate and unhappy.
I also have depression (bipolar2 - mild???) and panic attacks. My meds currently are Effexor XR 150mg, Wellbutrin XL 300mg, Ambien 5 to 10mg each night as needed, and Xanax .5mg to 1mg as needed.
I wish you well!
pc