Dear sts:
Lexapro and Paxil are almost the same thing, both are SSRI. If you feel really bad, you should take paxil, but it should be taken as a last resort. The main problems with SSRI is not the treatment, its the withdrawal. If you willing to try SSRI, try Prozac because it has a longer half-life, thus easier to withdraw. The main thing we see with SSRI is the original (or new) panic attack symptoms often come back after people stop taking these medications. These medications designed to treat (not cure) the PD. Hopefully you've tappered-off your lexapro slowly, if not expect more withdrawal surprises, although the half-life of lexapro is fairly decent 27 - 32 hours. As for right now stick with Xanax, if you feel groggy or sleepy afterwards that means it works, and continue your psychotherapy. Panic Attacks do not disapper over-night, mine last about 2 weeks, but when they are gone you feel twice as powerfull because you've survived them without meds. Also they become less severe with time, your brain needs time to correct these abnormalities. I hope my advice helps.