I've beentaking Ambien for several years and haven't had any terrible adverse effects. I've had some amnesia after drinking alcohol and taking Ambien, but my memory usually returns by the next day. I've also had muscle twitches and weakness & went to a neurologist for testing, but they found nothing wrong. I figured it was probably the Ambien. I stopped it for 2 weeks, once, but still had some of the symptoms. I've thought about trying to stop again, but I need to weigh the pros and cons. I actually sleep now, and generally have a lot more energy than in the past. I'm on a regular sleep schedule and can get 6-8 hours of sleep per night. I think I'll just deal with the side effects.