panic disorde
"Xanax XR (2mg every morning) has controlled my anxiety and panic attacks since 2008. One of the SSRIs I tried worked (Zoloft), but the side effects were unacceptable.  The XR does not have those side effects and keeps working at a constant dose, though I occasionally need .5mg Xanax PRN. Cognitive Behavioral Psychotherapy and Mindfulness Meditation have helped, too, but they are not enough."