I've been on Lexapro for a year now and Xanax twice a day. I've suffered with depression and panic attacks for 10 years now and I've tried Zoloft & Paxil too. I'm starting to think the Lexapro isn't working as well as it did. I'm taking 20 mgs a day and recently asked my Dr if I should go higher but he said no. Did anyone experience better results on a higher dose or on anything else?