When it comes to clonazepam, or any benzodiazepine, its going to make you tired for about a week until your body gets used to it. After that, they just relax you. I was on clonazepam for a long time at the same dose you're supposed to be taking it, then I switched to Xanax because it started to lose its effectiveness. I switch back and forth so I don't have to take massive amounts of them to get the desired effect. The only real difference I see between Xanax and clonazepam is that the latter lasts a lot longer. Hope I helped.
Peace