"as most pointed out here, pretty much useless.  had hoped for a new thing since i&#039;ve had insomnia (actually, shifted phase sleep rhythm), for most my life.  so for now, though it&#039;s losings it&#039;s effect due to being on it for years, i&#039;d highly recommend lunesta.  (it&#039;s not perfect, but it does work, especially for double insomnia.) also, a generic is now finally available (cheap and, just as important, it is the only sleep med currently approved by the fda for long term use!  ambien is not."