PURE ENCAPSULATIONS - Melatonin-SR - 60 Capsule(s) - NPN: 80076284 -- Promotes healthy sleep patterns in people suffering from sleep restriction, altered sleep schedule and delayed sleep phase disorderMelatonin-SR offers sustained-release MicroActive® melatonin to promote healthy sleep. Melatonin is a hormone produced by the pineal gland, which regulates the bodys sleep/wake cycle. Melatonins primary role is regulation of the bodys circadian rhythm, endocrine secretions and sleep patterns. Studies indicate that it facilitates the onset of sleep as well as sleep efficiency, providing specific support to shift-workers, international travellers and people with delayed sleep phase disorder. MicroActive® melatonin is an innovative, patented delivery system that offers both improved absorption and sustained release. A pharmacokinetic study of MicroActive® melatonin demonstrates rapid uptake and prolonged presence in plasma up to six hours after a single dose.