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Description
Due to its molecular structure, glutathione can be broken down in the digestive system, resulting in minimal amounts reaching the bloodstream

While oral supplements get destroyed by stomach acid and only 10-20% reaches your liver, IV therapy delivers 100% bioavailability directly into your bloodstream
10.1186/s12931-014-0109-y 188
In summary, the involvement of GSH in the carcinogenesis and in the drug resistance of tumor cell is clear, but further studies, aimed at understanding the GSH-driven molecular pathways, might be crucial to design new therapeutic strategies to fight cancer progression and overcome chemoresistance

is a Pfizer employee and owns Pfizer stock options

Cancer 2 , 141156 (2021)