The AsAGSH Cycle: A Vital Line of Defense Against Heat Stress Induced Oxidative Damage in Plants Springer Nature Link Deni HOW IMPORTANT IS GLUTATHIONE? Glutathione (GSH) is often called the body's master antioxidantand for good reason. It's present in every cell and plays a vital role in keeping your Glutathione (GSH) and NAD are both critical for cellular health, energy, and repair. Yet, they function very differently in the body. The question I'm often asked is, "Which one do I need Mitochondrial Glutathione, a Key Survival Antioxidant Montserrat Mar, Albert Morales, Anna Colell, Carmen Garca Ruiz, Jos C. Fernndez Checa, 2009