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Throughout the study, it was found that sublingual GSH and NAC led to significant improvements in glutathione levels, while oral GSH did not due to its low bioavailability ( 6 )

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Fogarty H, Townsend L, Morrin H, Ahmad A, Comerford C, Karampini E, et al

Oxidative stress happens when free radicals outnumber the antioxidants available to neutralize them, which can lead to cellular damage over time

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