does glutathione make you whiter 2017 IV Skin Brightening 9 Health Benefits of Glutathione

Studies on the changes in lipid peroxidation and antioxidants in fishes exposed to hydrogen sulfide

Cancer Metastasis Rev 38(12):205222 Rajeshkumar NV, Yabuuchi S, Pai SG et al (2017) Treatment of pancreatic cancer patient-derived xenograft panel with metabolic inhibitors reveals efficacy of phenformin

The thiol group is important this sulfur compound allows glutathione to donate electrons to neutralize reactive oxygen species ( ROS ) in the cell

Utter fanciful speculation: Maybe B12 has a role somewhat related to what it does in erythropoiesis

Enhancement of acetaminophen nephrotoxicity by acetaminophen-cysteine