Klonopin didn't work for me as well as Xanax does. When my panic attacks first started I was prescribed Klonopin and then when I had my monster panic attack that sent me into permanent agoraphobia and dr, I was taking Klonopin that night and I was eating them like candy and it didn't do anything for me. Soon after I was switched to a low dose of Xanax (.5 mg) and it managed to calm me down when nothing else would. Now I take .125 mg of xanax twice a day and I'm straight. A lot of times I forget to take the other .125 mg at night but I still feel ok. I feel fine on the xanax. It's the celexa that I feel like shit when I forget to take a dose, and when I do take it I'm tired all the time, plus the weight gain, etc etc.