Natural Ways to Increase Glutathione Before Wedding Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Glutathione in Food: How Your Diet Supports This Antioxidant Foods High in Glutathione Dr. Christina Carlyle Glutathione, the Underrated Antioxidant You Need in Your Diet Glutathione is known as the master antioxidant. This critical compound protects cells from damage caused by free radicals and toxins, supports detoxification, plays a key role in DNA synthesis and repair,