I have been on clonazapam for 3 years! I take half mg in morning and a whole mg at night. I have some anxiety problems, like driving in a highly populated city I tend to get tunnel vision, hyperventelate, and damn near pass out, not good in a high speed traffic zone with road construction! I have to say it does have some side effects though, not as long as I'm taking it. I previously had surgery and was on oxycodeine and was scared to take my clonazapam on top of it so I didnt. When my post surgery pain subsided I tried not to take my anxiety pills, as I have before, and I have physcotic nightmares! Really bad ones, like a kid that watched a horror movie, but didnt. I had one last night because I didnt take my pill!! Really bad one! I dont understand how this can affect my dreams! I wake up scared as hell.