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Overview. Melatonin is a hormone made in the body. It regulates night and day cycles or sleep-wake cycles. Melatonin in supplements is usually made in a lab. Darkness triggers the body to make ...
相關搜尋:
Overview. Melatonin is a hormone made in the body. It regulates night and day cycles or sleep-wake cycles. Melatonin in supplements is usually made in a lab. Darkness triggers the body to make ...