I took Ambien for about 2 1/2 months and then stopped. First of all, it made me sleep eat (common side effect, just FYI). Pretty much every morning I'd wake up with a granola bar wrapper or empty yogurt cup next to my bed that I had no recollection of eating the night before. So, that wasn't good. Then it stopped working anyway, so my pdoc and I decided it would be best for me to not take it anymore.