L., & Eastman, C
It should be noted that in addition to the Na + -dependent and Na + -independent GSH transporters, MRP (multidrug resistance-associated proteins), CFTR (cystic fibrosis transmembrane conductance regulator), and organic-anion-transporting polypeptide (OATP), especially oatp1 in OATP family, can also transport GSH [38] in addition to GSH derivatives such as glutathione disulfide (GSSG), glutathione S -conjugates, glutathione and metal complex [38]
When you swallow standard glutathione, the aggressive digestive enzymes (peptidases) in your stomach and small intestine rapidly hydrolyze the molecule, cleaving its delicate peptide bonds
Bromberger JT, Kravitz HM, Chang Y, et al
Bariatric surgery produces greater average weight loss, with gastric bypass achieving 25 to 30% and sleeve gastrectomy achieving 20 to 25% total body weight reduction
FEMS Microbiology Letters , 370, fnad116