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I think there's like three or four questions in there, and I'll try to get everything into like one example

British Medical Journal

Symposium Clinical Cytometry:109, 1983

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Research shows that glutathione significantly enhances the stability of vitamin C, extending its active presence in the body: Without glutathione, vitamin C levels rapidly decline, with only about 10% remaining after three days With physiological concentrations of glutathione, approximately 70% of vitamin C remained active after 14 days [12] This extended stability means your body maintains higher levels of these protective antioxidants for longer periods, providing more consistent defense against oxidative damage