EC Microbiology

Oxidative stress is a fundamental yet often overlooked mechanism driving pulmonary injury and chronic inflammation across multiple respiratory diseases, including COPD, asthma, interstitial lung disease, and post-COVID-19 syndromes. Although glutathione (GSH) is the most ubiquitous intracellular antioxidant, strategies to restore GSH through supplementation remain underutilized in clinical practice. Recent data suggest that natural glutathione precursors, such as undenatured cysteine-rich whey protein isolates (CRWPI), may offer a novel, accessible, and safe adjunctive intervention for reducing oxidative stress, improving lung function, and promoting recovery in these populations.

 Keywords: Glutathione; Cysteine; Immunocal; Oxidative Stress; Pulmonary; COVID-19

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