Compared to the placebo in these studies, melatonin was shown to significantly improve sleep onset latency and total sleep time in adults with delayed sleep phase disorder and in children/adolescents with a variety of neurodevelopmental disorders
None of the studies we could find is in-vivo (made on real people) anyways, so who knows
Monitoring : Depending on the peptide and its intended use, your healthcare provider may recommend regular monitoring of certain health parameters, such as hormone levels or blood markers
These encompass endogenous enzymes, including superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx), and exogenous compounds acquired from the diet, including vitamins C and E, carotenoids, and polyphenols