Have you thought about
visiting "anxiety-panic disorders" ?!? They may have a little more info for you. I'm sorry, I just have never personally dealt with something like this. You are sure the panic attacks are a "side effect" of taking the medications!? hmm..I wish I had some info for you...(I will be doing research to see what I can find out for you)
https://www.healingwell.com/community/default.aspx?f=9