Glutathione Garlic Sulfur Conjugates: Slow Hydrogen Sulfide Releasing Agents for Therapeutic Applications 7 Powerful Natural Sources of Glutathione for Optimal Health Did you know glutathione is often called the master antioxidant? It is essential for protecting your cells from oxidative stress, supporting detoxification, and supporting your immune system. If you're ready to Foods like garlic, avocados, spinach, and asparagus are known to be good sources of glutathione, or can help boost the bodys natural production of it. Additionally, consuming sulfur rich foods like