Are you familiar with the many benefits of nutritional yeast? It's naturally rich in glutathione, which is one of the most powerful antioxidants in your body. It helps detoxify heavy metals and Redox perturbations in yeast cells lacking glutathione reductase ScienceDirect Yeast mitochondrial glutathione is an essential antioxidant with mitochondrial thioredoxin providing a back up system ScienceDirect The use of a specific glutathione rich inactivated yeast to protect organic Catarratto grape must and wine from oxidation in the pre fermentative phase ScienceDirect