glutathione vs glycine Metabolic Maintenance® Capsules key role of serine in

Cytochrome P450 4F2 (CYP4F2) initiates -oxidation of tocochromanols, a process that is followed by -oxidation to carboxyethyl hydroxychromanol (CEHC), which can be conjugated with glucuronide or sulfate and excreted in urine or bile

Using reduced and oxidized glutathione, you can refold this protein into a more compact and more energetically favorable protein on the right where the disulfide bond is now between the first and third cysteine residues Glutathione is important in maintaining redox balance in cultured cells, and is already included in many formulations of cell media (Ishii & Mann, 2014)

None of this is surprising, since oxidative stress is closely linked with other forms of aging as well

Avoid heat and direct sunlight, which degrade peptides and oxidize oils