Melatonin is a hormone, the primary signaling chemical that keeps us in sync with the natural day night cycle. It is the keeper of our internal clock that tells the brain when it's time to sleep. Melatonin is made from tryptophan and low levels of either affect our sleeping patterns. Melatonin supplements can:
. Help in jet lag recovery
. Help with insomnia
. Reset the body clock for shift workers
. Protect against the effects of stress
. Also protect the brain against free radical damage
