Glutathione: The Ultimate Antioxidant for Your Health Food rich in glutathione: broccoli, cauliflower, banana, spinach, carrot, orange, avocado, onion, nuts. Glutathione is an antioxidant; helps make proteins in the body; has a variety of health benefits Stock Photo An investigation on glutathione derived from spinach and red cabbage leaves and their effects of adding to meat patties ScienceDirect An investigation on glutathione derived from spinach and red cabbage leaves and their effects of adding to meat patties ScienceDirect