Melatonin plays numerous important metabolic roles throughout the body, including synchronizing the sleep-wake cycle to a circadian rhythm that follows night and day.* Melatonin facilitates deep sleep throughout the night resulting in the feeling of more restful sleep.* Melatonin also acts as an antioxidant, helping to reduce oxidative stress throughout the body.** These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.