Melatonin is a hormone secreted in the brain that regulates sleep.
Also known as: N-Acetyl-5-Methoxytryptamine, Melatonine, Melovine, Melatol, Melatonex, Circadin
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https://www.lifeextension.com/Magazine/2018/7/New-Way-to-Use-Melatonin/Page-01