"while rozerem is effective for getting and staying asleep, i am spaced out the next day with a strange feeling that, even though my body has had a good night rest, i still want to go take a nap at periods through the day - not a normal tiredness, but a drug induced grogginess that comes on suddenly.  also, hard to focus my attention the next day.  i went on this because ambien gave me short term memory loss though i had no grogginess the next day on ambien.  the best result for me is to just sleep naturally with whatever hours i can get."