fasting and glutathione Protective effects of oral on fasting-induced intestinal atrophy through oxidative stress Fasting depletes Glutathione, turning "safe"
Description
Funct Foods Health Dis 12:198207 Otvos L Jr (2008) Peptide-based drug design: here and now
It is supplied in lyophilized powder form for controlled in vitro studies performed by qualified professionals

P53-dependent glutamine usage determines susceptibility to oxidative stress in radioresistant head and neck cancer cells

They also help the nervous system function properly

Nature 626:401410 Li Y, Shi J, Liu R et al (2023) Structure revisions of phenolic bisabolane sesquiterpenes and a ferroptosis inhibitor from the marine-derived fungus Aspergillus versicolor YPH93

For peptides like Epitalon to move from lab to clinic, the delivery method matters as much as the mechanism
