2018 pilot clinical study liposomal glutathione Collagen, Curcumin, and to Enhance Dermal Health in Aging Women with Declining Estrogen Levels —A Narrative Review | Dermatology and Therapy Liposomal Glutathione

Most often it's used to create liposomes and to coat and stabilize other ingredients

(PubMed) Salinthone S, Schillace RV, Marracci GH, Bourdette DN, Carr DW

An increase in the abundance of Actinobacteria and Proteobacteria phyla strains and a reduction in the diversity of individual bacteria characterise this evolution (Table 2)

Furthermore, in a model of isolated rat liver perfusion, GSH administration during cold preservation prevented hepatocyte damage, deterioration of hepatic circulation, and the fall of intracellular GSH levels during the reperfusion period [222]

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Again, another well known powerful antioxidant for the immune system