1. Hormone biputere ka mezie photoperiodicity na mammals. Na-egbochi cerebellar nitric oxide synthetase
2. Enwere ike iji melatonine mee ihe na ntinye ụra, na-agbanwe ụda circadian, antioxidant, free radical scavenger.
3. Immunostimulant; Melatonin ligand receptor
4. Melatonin nwere mmetụta dị mgbagwoju anya na ụzọ apoptotic, na-egbochi apoptosis na sel ndị na-alụso ọrịa ọgụ na neurons mana na-eme ka mkpụrụ ndụ apoptotic ọnwụ nke mkpụrụ ndụ cancer. Na-egbochi mmụba / metastasis nke mkpụrụ ndụ kansa ara site na igbochi ọrụ nnabata estrogen.