Impurities and mislabeling are real risks tied to sourcing rather than to the molecule itself, and they can affect both safety and any hoped-for activity
Starita LM, Lo RS, Eng JK, von Haller PD, Fields S
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Glutathione is a tripeptide (a group of three amino acids joined by peptide bonds) and includes the amino acids glutamine, glycine, and cysteine
Endoxifen, the most potent metabolite is produced via N - demethylation of tamoxifen to form N -desmethyltamoxifen (NDM) whereas CYP2D6 catalyzed 4-hydroxylation of NDM to form endoxifen