Melatonin Supplements: Overview, Uses and Side Effects
What is Melatonin? Melatonin is a hormone that the body produces. It controls the cycle of night and day, also called the sleep-wake cycle. The body makes more melatonin when it’s dark, which tells the body to sleep. Light makes less melatonin, which tells the body to wake up. Melatonin levels can be low in some people who have trouble …