Melatonin

Melatonin is a hormone that the body produces naturally.
It is produced by the pineal gland in the brain, but it can also be found in other areas, such as the eyes, bone marrow, and the gastrointestinal tract.

It is often called the sleep hormone, as high levels can help you fall asleep.
However, melatonin itself does not knock you out; it simply lets your body know that it is nighttime, making it easier for you to relax and fall asleep.
Melatonin supplements are popular among those suffering from insomnia and jet lag. In addition to its benefits for sleep, this hormone also has powerful antioxidant and anti-inflammatory effects.