Glutathione Molecule Is An Important Antioxidant In Plants Animals And Some Bacteria Structural Chemical Formula And Molecule Model Stock Illustration Download Image Now iStock Glutathione is an antioxidant that's made up of the three amino acidsglutamine, glycine, and cysteineall of which are rich in the mineral sulfur. The main functions of glutathione are to fend off Glutathione is the body's master antioxidant. It is important for handling oxidative stress, detoxification, and immune health. Low glutathione is linked to many chronic illnesses. Knowing what your body needs to make JCI Insight Bile acids regulate cysteine catabolism and glutathione regeneration to modulate hepatic sensitivity to oxidative injury