Free radicals are molecules that can damage your cells and cause problems, including liver disease. Leafy greens like spinach have a powerful antioxidant called glutathione, which can protect against free radicals and 7 Things to Avoid When Taking Glutathione Core Med Science Glutathione facts: 1. Glutathione is an important antioxidant in the body that helps protect cells from damage caused by free radicals. It is found in almost every cell and is composed of Your body's immune system helps you fight infections, and research shows that eating a diet full of antioxidants and other key nutrients can make it work better! Read more about foods that Liposomal Glutathione Supplement Body's Master Detoxifier