Glutathione: Source, Supplementation and Side Effects Foods With L Glutathione: Avocado, Watermelon, and More GoodRx BOOST GLUTATHIONE NATURALLY Sulfur rich foods (allium + cruciferous + poultry fish beef) boost glutathione synthesis. Vitamin C raises glutathione by fighting free radicals. Selenium rich foods support glutathione production. Glutathione rich foods Have you heard of glutathioneGlutathione is your body's master antioxidant. If you have inflammation you want healthy glutathione levels. A few small studies show that glutathione capacity is reduced in endo