Rozerem is a medication used to treat insomnia means those who have a sleeping problem. Buy Rozerem Online. Rozerem, also known as a hypnotic, is a sedative that helps regulate our sleep-wake cycle. Melatonin helps us fall asleep, and Rozerem works similarly to aid in sleep induction, without being habit-forming. Children can not use this medication. Do not use this medication without a prescription from a doctor.