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Gambini, J

System Xc - , also named cystine/glutamate antiporter, is a transmembrane transport complex that is composed of a catalytic subunit solute carrier family 7 member 11 (SLC7A11) and a regulatory subunit solute carrier family 3 member 2 (SLC3A2) [26, 27], which can transfer glutamate output to the cell and cysteine to the cell in a ratio of 1:1 [27]

Glutathione is a required substrate for a family of enzymes called glutathione S-transferases, which conjugate glutathione to reactive compounds including drug metabolites and environmental toxins making them water-soluble for excretion

I have been using these vitamins for a while and so far so good