Can of diabetes medicines help patients with diabetes and kidney disease Providence Glutathione or GSH, is the most powerful naturally occurring antioxidant in all human cells. What is glutathione and why must we protect patient access to it? Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get