While the ingredients in Sleep MD seem like they would aid you in getting to sleep, it had no effect on me. Whenever I would take one of these pills before going to bed, I would have many vivid, sometimes insane dreams. I consider this a positive side-effect, so I'm giving it two stars. I suppose others may view it as negative, but to each his own.
I recently used up all the pills and am contemplating whether or not to buy another box simply for the dreams they give me. Seriously, dude, these dreams are INSANE. Sometimes I woke up in the middle of the night with a horrible fear of impending death, with no idea why I feel that way. Other times I dreamed of all sorts of strange, yet fantastic creatures all around me. Oh, and it also gave me sleep paralysis a couple of times (I woke up but was unable to move any part of my body other than my eyes for about 10-15 minutes).