"i was initially prescribed klonopin (clonazepam) for generalized anxiety disorder. it works very well, not quite as quick as xanax, however it is well worth the wait. i also have panic disorder. it prevents them from happening in the first place. i developed a tolerance to the sedative effect after a month or two. 2 years strong. i take 1-8mgs a day. use it sparingly. it has a long half life and stays in your body longer than alprazalam. i feel like xanax lasts a few hours then rebounds. "