High dose melatonin 60mg per capsule Produced by the pineal gland in your brain, Melatonin declines sharply in middle age and continues to drop with every passing year. Melatonin is needed to make serotonin, a mood-supporting hormone that also supports memory and cognitive function. Melatonin also helps regulate leptin, an important hormone for appetite and weight control. Supplemental Melatonin can help achieve restful sleep, help keep mind and memory sharp, support weight control and improve overall sense of well-being.