Melatonin ndi mahomoni opangidwa ndi nyama zoyamwitsa ndi pineal gland muubongo wamunthu, ndipo ili ndi magawo osiyanasiyana achilengedwe, kuphatikiza kuwongolera kugona ndi kudzuka, antioxidant, anti-inflammatory, and neuroprotective.Udindo waukulu wa melatonin ndikupangitsa kugona, kukumbutsa anthu kuti ndi nthawi yoti agone, ndikufupikitsa nthawi yogona ndikuwongolera kugona.Kuphatikiza apo, ilinso ndi antioxidant yamphamvu, yomwe imatha kuchotsa ma free radicals m'thupi ndikuteteza maselo ku kuwonongeka kwa okosijeni.Panthawi imodzimodziyo, melatonin imakhalanso ndi zotsatira zotsutsa-kutupa, imatha kuchepetsa kutupa, kuchepetsa ululu ndi kutupa ndi zizindikiro zina, ndipo imakhala ndi zotsatira zina pa chithandizo cha nyamakazi, gout ndi kupweteka kosalekeza.