oxidized glutathione solubility Sigma-Aldrich Glutathione, Reduced, Free Acid, CAS 70-18-8, Glutathione, Reduced, Free Acid, CAS 70-18-8 an antioxidant containing cysteine Three essential properties of glutathione:
Description
glutathione peroxidase and glutathione reductase

As for TB-500, there are no published peer-reviewed trials in humans

Fu J, Liu G, Yang M et al (2019) Isolation and functional analysis of squalene synthase gene in tea plant Camellia sinensis

ACS Appl Bio Mater 4:14701482

Jensen RBB, Chellakooty M, Vielwerth S, Vaag A, Larsen T, Greisen G, Skakkebk NE, Scheike T, Juul A

Potentially improving cellular uptake of peptides due to its biochemical properties
