The cheapest insurance against this is buying bacteriostatic water from a source that can confirm what's actually in the bottle manufacturer name, lot number, USP labeling, glass vial with metal-crimp seal, and the explicit "0.9% benzyl alcohol" line
While GSH donates electrons to counter free radicals and reactive oxygen species, it turns into GSSG, the inactive and oxidized form of glutathione
Hyperhomocysteinaemia and vascular injury: advances in mechanisms and drug targets
Healing pathways in controlled injuries may behave differently in complex human disease contexts
Mier-Cabrera M, Jimenez-Zamudio L, Garcia-Latorre E, Cruz-Orozco O, Hernandez-Guerrero C: Quantitative and qualitative peritoneal immune profiles, T-cell apoptosis and oxidative stress-associated characteristics in women with minimal and mild endometriosis
(2) it can serve a diagnostic and prognostic role based on the evaluation of the redox status