You may be able to avoid medication completely by trying an accupressure related treatment called EFT (free tutorial pdf download on http://www.emofree.com)
I have used it myself for major panic anxiety attacks and it was the ONLY thing that worked to the point that the anxiety was simply gone. I teach the technique and use it over the phone to help people all over the country. My site is http://www.freewebs.com/stevelevine
to find out more. Try it for free or call if you need help.