"really bad insomnia, 40 years now. lost marriage &amp; job as result.  can&#039;t take klonopin more than twice a week, or builds tolerance. ambien (zolpidem)--eh--too much causes sleepwalking, too little means up every 3 hours for next dose. started 3mg lunesta 1 week ago. 1st one, nothing. waited 1 1/2 hours. 2nd one-same story. 3rd one--started-- to feel something, but still, no sleep. (4 hours have gone by) #4 put me to sleep for rest of night.  now take 3 all at once, sleep maybe 2 hours, than have to go for #4.  will start taking 4 all at once tonight. insurance wouldn&#039;t pay (sept 2014), $324 for 30, i.e., about $1400 a month.  can&#039;t afford that.  will dance between klonopin, ambien &amp; lunesta.  (and/or nothing at all to keep lunesta cost down)."