glutathione is destroyed in the gastro intestinal tract Our Diet and Its Role in Body: From Disease Prevention to Anti-Aging Gut microbiota in pancreatic diseases:

Dethlefsen L, McFall-Ngai M, Relman DA (2007) An ecological and evolutionary perspective on humanmicrobe mutualism and disease

Here, we performed an in vitro metabolomics study of the 3 most odorous anaerobic microbes isolated from the human gut in our laboratory ( Clostridium sporogenes, Clostridium subterminale and Romboutsia lituseburensis ) when grown in anaerobiosis or in aerobiosis with these 3 antioxidant molecules via gas and liquid chromatography-mass spectrometry (GC/MS and LC/MS)

Fu Z, Jiao Y, Wang J, Zhang Y, Shen M, Reiter RJ, et al

The exact doses, push rates, concentrations, infusion-compatibility details, and the immediate-use compounding math are taught in Empire's IV Nutrition Therapies Training rather than reproduced here, because concentrations vary by pharmacy and the technique is where safety lives