"i find that clonzepam works really well for generalized anxiety but if i do have a panic attack, then it doesn&#039;t do much. when i first started, i was prescribed .5 2x a day and then 1mg of xanax as needed for panic (15 a month). this was a great pairing, but the withdrawal was long and awful when a new doctor took me off the drugs cold turkey! needless to say, i am no longer a patient of hers. i was prescribed .5 2x a day again and it reduces my anxiety without making me less &quot;sharp.&quot; tolerance does build fast and, when i was on a strict schedule, if i missed a dose i was a nervous wreck. i now take it as needed but i may have to increase the dose soon because .5 doesn&#039;t work like it used to."