anxiety
"Xanax XR is very similar to Klonopin. It's slow to start up (around an hour) then it lasts a long time (8-12 hours). It has subtle effects and no big highs and lows in anxiety like regular Xanax IR does. I highly recommend Xanax XR for all-day (or  most of the day) relief from anxiety and panic attacks. You might want to have regular Xanax or Ativan around for panic attacks on a when required, or as needed, basis for panic attacks only."