The Best Foods To Boost Your Body's "Master Antioxidant" Which foods are highest in glutathione ? Foods With L Glutathione: Avocado, Watermelon, and More GoodRx Sulfur rich foods for hair growth. Natural food sources of sulfur with the symbol S and atomic number 16. Healthy food to boost glutathione. Onion, garlic, dried apricot, radishes, nuts, spirulina. Stock Boost your body's natural detox and immunity with these top glutathione supporting foods! Extra Tip: Exercise, get quality sleep, and reduce processed foods to naturally increase glutathione levels. Follow for more healthy tips,