I have fibromyalgia which causes a lot of sleep disturbances. I have been on Ambien nightly for 3 years. I joined SP in May. As of August 1st, I am completely off of Ambien for I no longer have any need for it! I sleep soundly every night.....all night long. I haven't had a "late night wake up and done" nor a night of "twilight dozing only" for 6 weeks now! My brain goes to sleep when my body does now. Goodness.......I'm even dreaming again!