Melatonin-SRSustained release melatonin to promote restful sleep Melatonin SR provides time release MicroActive melatonin to support healthy sleep. Melatonin is a hormone produced by the pineal gland, which regulates the body's sleep wake cycle. The main role of melatonin is the regulation of the body's circadian rhythm, endocrine secretions and sleep phases. Studies show that it makes it easier to fall asleep and improves sleep quality, providing specific