Natrol Melatonin contains vitamin B-6 to promote normal sleep patterns.* A good night's sleep can help restore your body, boost your immune system and may help you maintain a healthy body weight. Melatonin serves as the body's biological clock, managing the sleep and wake cycles. Age, everyday stress and diet choices induced by busy lifestyles can take a toll on the body's production of melatonin. Help combat occasional sleeplessness with Natrol Melatonin, a natural nightcap that helps your body establish normal sleep patterns to promote a more restful, relaxing night's sleep, and better overall health.