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Front Environ Sci 2:39

Some studies indicate that elevated glutathione levels can help cancer cells resist chemotherapy, for some of the same reasons that glutathione protects healthy cells it acts as an antioxidant and detoxifies the chemotherapy drug that is meant to kill cancer cells

Research Limitations and Gaps While the individual peptides have encouraging results in animal or cellular models, several limitations remain: Lack of clinical trial data on combinations or long-term effects Unknown interaction dynamics between multiple peptides in vivo Variability in peptide purity and stability among sources Dosing and timing considerations remain undefined in a blended context Limited human translational data beyond small pilot or observational studies Further research is needed to determine how such peptides behave together , including any potential synergistic , neutral , or even antagonistic interactions

doi: 10.1007/s11325-006-0074-x