where is glutathione synthesized Synthetase - an overview Glutathione: The Critical Role It

doi: 10.1111/bph.13702 531 KimDYLeeJSParkSYKimSJSonCG

N-acetyl L-cysteine (NAC) N-acetyl-L-cysteine (NAC) synthesizes an antioxidant called glutathione to improve liver health and digestion and maintain healthy blood sugar

Lab Anim Sci 37(1):80-3

The framing throughout reflects the compound's actual status as a research peptide of substantial laboratory interest with a well-characterized coordination chemistry, well-grounded connections to copper-dependent extracellular matrix biology, and a distinctive cosmetic-ingredient regulated use that operates under different evidentiary frameworks from pharmaceutical approval