covid-19 and glutathione Glutathione-Mediated Redox Regulation of Immune Dysfunction in Tuberculosis Glutathione and the Covid vaccine:

C., Ciraci, S., Balestrini, R., La Rocca, N., Bruno, L., Chiappetta, A., Bitoni, M

10.1038/nm.3762 24 KoK.-M.LeonT

A review of forty-nine observational studies published in the May 2011 issue of the Cochrane Database of Systematic Reviews concluded that higher selenium exposure reduces overall cancer incidence by about 34 percent in men and 10 percent in women, but notes these studies had several limitations, including data quality, bias, and large differences among different studies

A 2025 narrative review published on PMC confirmed that oral glutathione shows significant, if variable, reductions in melanin levels with limited side effects, with the 500 mg per day dose consistently cited as effective