glutathione congestive heart failure reductase activity in serum patients with various stages of Glutathione deficiency and heart failure:

The redox effects of GSH or other thiol agents can be assessed by the use of irreversible thiol alkylating agents such as N-ethyl maleimide (NEM) which would form covalent bonds with cysteine residues and prevent further modification of these sites as has been analyzed in modulation of GABA- and glycine-evoked currents in rat retinal ganglion cells (24)

But they dont

Importantly, they found that anti-oxidant capacity of the milk was strongly correlated with the presence of phenols

Patients with kidney stones, electrolyte imbalances, or certain medical conditions should avoid high doses of intravenous vitamin supplementation