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The Absorption Problem with L-Arginine Here's the research that changed how most clinicians think about this: a landmark pharmacokinetic study found that oral L-arginine is extensively catabolized by arginase enzymes in the intestinal mucosa and by hepatic first-pass metabolism
Glutathione depletion can occur through several mechanisms, including insufficient availability of precursor amino acids (particularly cysteine), increased utilization during oxidative stress, low selenium, and impaired recycling from its oxidized form, GSSG
10.1017/S146239940900132X 143 PerleyM
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