anxiety
"I've taken Xanax (generics) for anxiety and panic attacks for seven years.  I've taken it just as my doctor instructs (actually, he wants me to take it more often) and have had no issues with dependency, even during periods when I needed it three or four times a week.  I love that it kicks in in under five minutes.  I take it as soon as I start panicking, and five minutes later, my mind just calms down.  It doesn't numb me or get me high, it just keeps my brain from going into a panic spiral.  It also helps reduce the urge to self-harm. The only side effect I've experienced is drowsiness, but it usually isn't enough to keep me from going about my day.  One warning, though: DO NOT take with alcohol. "