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 Because glutathione levels decline as you age, and glycine can help slow the glutathione slide, it's a good idea to keep your levels high by eating protein rich foods, like organic poultry, grass fed 8 Ways to Increase Glutathione Levels Naturally Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company