Rozerem is a sedative, also called a hypnotic. It works by affecting certain substances in your body that help regulate your "sleep-wake cycle." Rozerem tablets naturally improve the body's circadian rhythm, which underlies the normal sleep-wake cycle. Research has also shown that ramelteon is not addictive or abusable, so it is not even listed as a controlled substance (DN Neubauer. “A review of ramelteon in the treatment of sleep disorders.” Neuropsychiatric Disease and Treatment.