AFMK is a melatonin metabolite that exhibits strong antioxidant properties, making it valuable in protecting cells from oxidative stress and free radical damage. It plays a role in anti-inflammatory processes and has been studied for its neuroprotective effects, particularly in degenerative brain conditions such as Alzheimer's and Parkinson’s disease. Due to its ability to cross the blood-brain barrier, AFMK supports cellular defense mechanisms in neural tissues. It also shows potential in regulating circadian rhythms and sleep cycles, contributing to overall metabolic and immune system balance. Research is ongoing into its use in age-related diseases and conditions involving mitochondrial dysfunction.