As has been pointed out, these meds react differently with different people. Ambien affects me dramatically. I do everything BUT sleep. Lunesta seems to have fewer side effects. But the more you take, the LESS effective it is in helping one sleep. Just take one as directed, and know that some nights it just won't help at all. At the end of the day, I sleep better when I do all the boring things like eat well, excercise, and keep on a schedule. Frustrating, but there really aren't any magic pills out there. SIGH!!!