Restful Sleep Antioxidant Support No Added Sugar Great Raspberry Taste! 1.5 mg Melatonin Supports Healthy Sleep Patterns Non-GMO Verified Third Party Purity Tested Dietary Supplement Fall Asleep Faster. Stay Asleep LongerMelatonin 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.