Now I remember, one on-call p-doc whom I saw a few years ago was explaining to me that these guys - Ambien, Lunesta, Sonata - work just like benzos. So what can I say - try what I do, which is a low dose of an old tricyclic AD, Elavil (NOT a benzo, would not require an increase in dosage, is not habit-forming, would not stop working with the passage of time, does not require breaks in use). At the low dose that I am taking, NO side effects. In the beginning there was morning grogginess, but that went away. I am so glad that my sleep is regulated by something that is not habit-forming!!