ZzzQuil PURE Zzzs All night is the only product with our unique botanical blend plus BioMelatonin, designed to mimic your body's natural melatonin release so you can fall asleep & stay asleep longer through the night. Immediate Release layer helps you fall asleep naturally; Extended release layer helps you stay asleep longer. BioMelatonin slowly releases for up to 6 hours to help you improve sleep quality & wake refreshed. These statements have not been evaluated by the Food and Drug administration. This product is not intended to diagnose, treat, cure, for prevent any disease.