"i love zolpidem, it works great for me. i&#039;ve been using it about 4 times a week for 9 months and so far i haven&#039;t had any tolerance or loss of effectiveness.  i&#039;m asleep within 30 minutes after taking it, every time. i have noticed that it makes me drowsy for a while the next day (not as bad as tylenol pm or unisom can).  there has also been a couple times when i have woken up in the middle of the night and done weird stuff that i don&#039;t remember, which is kind of scary. overall though it has been a god send."