I've been on a cocktail of Ambien, Trazadone, melatonin, Benadryl and valerian root for years...my GP has no issue with re-filling these meds forever. Although Ambien does cause a dependency, I believe that's better than chronic lack of sleep, which takes a tremendous toll on both mind and body. BTW, the best sleep I ever got was when I took Remeron for depression. I had to quit it though as I was in a fog all day.