Melatonin is a neurohormone, secreted by the pineal gland in the brain, that regulates the sleep/wake cycle. Light suppresses melatonin synthesis. The primary use of melatonin as a supplement is to normalize abnormal sleep patterns.
What is melatonin?
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•Last Updated: May 16, 2025
Melatonin is a neurohormone produced by the pineal gland that regulates the sleep/wake cycle and is suppressed by light. It is commonly used as a supplement to help normalize abnormal sleep patterns.