Overall, ramelteon is well tolerated by most individuals who take it. Unlike many of the other medications used for the treatment of insomnia, ramelteon does not cause significant adverse effects on memory, motor function, or cognition. Some people have reported performing activities with no memory of the event, such as driving or eating; this same effect occurs with other sleep aids. The prescription drug ramelteon (Rozerem) is a sleep aid prescribed to help reduce the time it takes to fall asleep. Unlike most drugs used for sleep, ramelteon works by stimulating the same receptors in the body as our own melatonin. Melatonin controls our sleep-wake cycle. While we don’t know exactly how it all works, we do know that when the sun goes down our bodies release melatonin naturally to cause drowsiness.