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Bioavailability: NAC has an oral bioavailability of approximately 6-10% due to extensive first-pass metabolism, but the deacetylated cysteine that reaches tissues effectively drives glutathione synthesis [9]
Without adequate copper at the site of collagen assembly, the body produces weak, poorly cross-linked collagen even if production volume is high
European journal of heart failure
Products that combine glutathione with complementary ingredients like milk thistle, selenium, or vitamin C can offer enhanced benefits, but the amounts of each ingredient should still be clearly disclosed
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