Irregular sleep patterns are associated with a wide variety of health problems. Melatonin is the hormone used by your body to help you fall asleep, and thus supplementation is seen as a way to help get regular sleep. This is particularly useful for people who engage in shift work or are jet lagged. Additionally Melatonin can reduce anxiety, stress and depression. Some sources even claim that Melatonin can also support digestive and eye health, however, it is not yet scientifically proven.