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The appropriate concentration depends entirely on the laboratory protocol, measurement precision required, and experimental design
Much of an administered dose is swallowed but not absorbed, as shown by fecal excretion studies
Food supplements should not be used as a substitute for a balanced diet
Stability Performance: SAG Shows Clear Advantages Degradation Pathway of Unprotected Glutathione: Oxidation of Thiol Groups to GSSG During production and storage, the main degradation pathway of L-glutathione is the oxidation of thiol groups to disulfide bonds, forming inactive GSSG
Its unusual stability in acidic environments (pH 12 gastric fluid) has been documented, though the structural basis for this resistance is not fully characterized
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