I used to be on Klonopin and I asked my pdoc if I could switch to Xanax, because it works so much better for me. Usually benzos work within 30 minutes for me, and I often chew them up so it will get in my blood stream faster.

If you are having frequent anxiety, here's another thing you could ask your pdoc: can he/she give you something that will prevent your anxiety all of the time, such as an antipsychotic like Latuda or Abilify? Both of those have helped me enormously with preventing anxiety. I was on Latuda for 3+ years and it helped a lot, but now I've switched to Abilify, and it is helping a lot, too. Just an idea.

Good luck!