Dog Safe Snacks: What Foods Are Rich in Glutathione? Earth Buddy Pet 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, Glutathione: The Master Antioxidant And How to Support It Naturally Dr. Nafizal H. What is Glutathione? Foods that are naturally rich in Glutathione Times of India Natural Ways to Boost Your Glutathione Levels (Without Expensive Supplements)