Melatonin is a hormone made by a part of the brain called the pineal (say: “pin-ee-all”) gland.
Melatonin may help our bodies know when it’s time to go to sleep and when it’s time to wake up.
Melatonin supplements (in pill form) can also be taken. ‡
Some people who have taken melatonin have reported sleepiness, headache, a “heavy-head” feeling, stomach discomfort, depression or feeling hungover. ‡