Available from: Atkinson MA, Eisenbarth GS, Michels AW
99% purity, HPLC verified, COA available
The article says oral glutathione has limited bioavailability, meaning much of what is swallowed does not reach circulation in a useful form, and that evidence for its specific health claims is modest at best
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Nat Commun 11 , 869 (2020)
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