Antioxidant and Antiproliferative Activities of Several Garlic Forms Some Patients Are Taking Glutathione, Should You? Southern California Integrative Wellness Center Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get