Two Brazil nuts a day to support your glutathione pathway. Here is why this matters. Selenium is a cofactor for glutathione peroxidase, the enzyme that activates glutathione your body's master Glutathione: The Bodys Master Antioxidant, ., ., Glutathione (GSH) is often referred to by scientists and nutritionists as the "Master Antioxidant." Unlike other antioxidants like Vitamin C or E, International Journal of Molecular Medicine What is Selenium? What Does It Do? What are the Benefits? Selenium: Burgerstein Vitamine