Zzzquil, zzzs all night is the only product with unique botanical blend plus biomelatonin designed to mimic bodys natural melatonin release so can fall asleep and stay asleep longer through the night. Immediate release layer helps fall asleep naturally. Extended release layer helps stay asleep longer. Biomelatonin slowly releases for up to 6 hours to help improve sleep and wake refreshed. Made with lavender, chamomile, valerian root and lemon balm, botanicals which have been used for centuries. Product Benefits. Dietary Supplement. Helps Fall Asleep And Stay Asleep. No Next Day Grogginess.