Immunomodulatory Effects of Glutathione, Garlic Derivatives, and Hydrogen Sulfide Bioavailability of catechins from guaran (Paullinia cupana) and its effect on antioxidant enzymes and other oxidative stress markers in healthy human subjects Food & Function (RSC Publishing) Glutathione is a powerful antioxidant made by the body that helps protect cells, support detoxification, and promote healthy, glowing skin. These foods naturally help boost and protect glutathione levels supporting skin health Phytochemical Screening of Garlic (Allium sativum) and Its Antioxidant and Antimicrobial Activities Catalase and glutathione peroxidase mimics ScienceDirect