oral glutathione skin lightening study What Is Glutathione's Role in Lightening? Systematic Review of the Efficacy
Description
Regarding the ratio of GSH/GSSG in the digesta, GSH/GSSG in the HGSH group was significantly higher than the LGSH group in the stomach on d5 ( p = 0.002) and in SI1 on d14 ( p = 0.023)

Furthermore, the NLRP3 inflammasome and cyclic GMP-AMP synthase-STING pathway, which are associated with increased mitochondrial damage and respiratory stress, are activated in MS (133,134)

Stomach acid, digestive enzymes, and competing nutrients all influence absorption

Over time, they can also lead to inflammation and oxidative stress
