These melatonin lozenges contain a mild minty flavor. Melatonin is a potent antioxidant that supports the beginnings of restful sleep while governing the body’s natural circadian rhythm. This melatonin has a gradual six-hour time release for effective absorption. While some nutrients break down during liver metabolism, these lozenges bypass the liver. How? They’re absorbed directly into the bloodstream via the blood vessels in the cheeks and under the tongue.