Wish I had know this before I blacked out and totaled my car from taking AmbienCR! Unfortunately it can't be proved but I KNOW that was what did it in my case. funny I am beginning to get back some of my memory loss and recovering slightly from the wreck almost a month later and 3 weeks after not taking the ambiencr. Still have to take regular ambien a few times to sleep. can't stand the pain of being awake all night. also stopping cymbalta thinking it is giving me some problems too. could have been a combination of both?