These deliver glutathione itself, but it is partly broken down in the gut before it can reach circulation
ten healthy volunteers taking zinc-carnosine (37.5 mg twice daily) were protected against the threefold increase in gastrointestinal permeability caused by indomethacin treatment (Mahmood 2007)
Eur J Biochem 269:24142420 Holland D, Ben-Hayyim G, Faltin Z, Camoin L, Strosberg AD, Eshdat Y (1993) Molecular characterisation of salt-stress associated protein in citrus: protein and cDNA sequence homology to mammalian glutathione peroxidases
reduction of oxidative damage
International Journal of Cosmetic Science 27(3):155-160. [doi.org]
It should be noted that hyperuricemia in both men and women is a significant contributor to the development of non-alcoholic fatty liver disease (NAFLD), diabetes, the metabolic syndrome, and obesity