Melatonin helps mediate the bodys 24-hour circadian rhythm and regulates sleep, mood and behaviour, such as depression and anger. As an antioxidant, melatonin works to scavenge free radicals, which may result in cell damage. Melatonin supports immune system health. Jamiesons Melatonin-3 is the first and only melatonin product to be researched and manufact.. Read more