I just stumbled upon this thread and it scares me reading this. I have been taking .5 mg of klonopin prior to bedtime for about 6 or 7 months now for a sleep disorder that nobody can seem to explain. Not sleep apnea but I gag for air after only about an hour of sleep many nights and think I'm going to die, it's so bad I can't explain it. Gone on for 25 years and they thought I had sleep apnea, even got a cpap but had no effect at all. Further test said no sleep apnea so doctor gave me klonopin which has stopped these episodes better than 90% of time, it's been amazing. But I will not go beyond .5 mg from what I've read here and elsewhere. I feel I need it to survive long term or die in violent waking episode one night.