What is glutathione and why must we protect patient access to it? Glutathione (GSH), the body's primary intracellular antioxidant, plays a fundamental role in maintaining redox balance and detoxification. In normal physiology, this is protective. However, in oncology, the picture becomes more nuanced. Emerging L Glutathione vs. Glutathione: What's the Difference? Invigor Medical Glutathione: Physiological and Clinical Relevance Restorative Medicine