What is melatonin's main function? what are its other functions?

Melatonin mediates function through, antioxidant action in most of disorders. Melatonin is a chronobiotic substance that acts as synchronizer by stabilizing bodily rhythms. Its synthesis occurs in various locations throughout the body, including the pineal gland, skin, lymphocytes and gastrointestinal tract (GIT)

melatonin is a hormone secreted by the pineal gland and its main function is to regulate sleep rhythm (circadian rhythm)