Melatonin is a hormone produced by the pineal gland in
the brain. It plays a crucial role in regulating the sleep-wake cycle, helping
to control when a person feels sleepy and when they feel awake. Melatonin is
typically released at night, in response to darkness, and its levels in the
body are highest during the nighttime hours. Melatonin supplements are often
used as a natural sleep aid to help people fall asleep faster and improve sleep
quality. They are commonly used to treat insomnia, jet lag, and other sleep
disorders. However, it's essential to speak with a healthcare provider before
taking melatonin supplements, as they can interact with certain medications and
have side effects.