panic disorde
"I have been on Xanax for about 8 months after a very difficult period in my life. Xanax helped me very well in the beginning of threatment but quickly tends to lose its beneficial effects. The development of tolerance is a major issue with all benzodiazepines and seems to build fast with Xanax / alprazolam. I had to increase my dose from 0.5 mg twice a day to 2 mg three times a day. Tapering off can be difficult."