I think I may be one of the few that doesn't get any adverse side effects from it. My dad on the other hand, sleep walks. We've woken up a number of times where the front door has been unlocked and the screen door wide open. Several times, we've woken up to a full service dinner setting complete with glassware and silverware in the bathroom. It was kind of funny up until the 5th or 6th time and then it was like do we really need to strap him into bed?!