Well, at least I'm not up alone apparently! Mark, thanks for the info on half life etc. I like the in depth information too. I was offered the choice of ambien or klonopin by my gp after that awful "sleep" study. I haven't dared take the klonopin yet, but my sleep is so bad, I might give it a shot for one night....still pondering it. The lack of sleep is making my PCS symptoms worse...I actually completely forgot an acupuncture appt today, which I have not done yet since this whole thing started. Hope I remember to go tomorrow!