Glutathione for the Skin Lightening : Benefits & Side Effects IV Drip Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Antioxidant Rich Foods to Grow for Immune Health Glenside, PA 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 9 fruits with the most antioxidants, according to dietitians Harvard Street Neighborhood Health Center