1. Hormona postulatur ad mediationem photoperioditatem in mammalibus. Synthetasis oxydi nitrici cerebellaris nia
2. Melatoninus in somni inductione adhiberi potest, modificare circadian rhythmum, antioxidantum, liberum radicale scavenger.
3. Immunostimulant; Melatonin receptor ligand
4. Melatonin effectus complexos habet in viis apoptoticis, inhibens apoptosin in cellis immunibus et neuronibus, sed amplificans apoptoticam cellam mortem cellularum cancri. Proliferation/metastasis cellularum cancri pectoris inhibet actio receptoris inhibendo.