does glutathione work without vitamin c Is the Master Antioxidant? Here’s What Science Says Vitamin C and glutathione supplementation:

Liposomal glutathione provides a similar benefit by protecting the molecule through digestion, making it a highly effective and practical way to maintain consistent levels every day

Child-Pugh A (mild impairment, score 5-6)

[Google Scholar] Yu C., Cunningham M., Rogers C., Dinbergs I

Retrospective studies have demonstrated that some beneficial polyphenols have the capacity to increase the activity of CBS [14, 15]

Glutathione still matters for the brain, because oxidative stress is deeply involved in neurodegeneration

One additional study was excluded from quantitative analysis as full results could not be obtained