What Foods Promote the Highest Glutathione Levels?

Many whole foods contain significant amounts of glutathione or its precursors. Foods richest in sulfur-containing amino acids are usually the best sources of glutathione:


  • The overall top food for maximizing your glutathione is high quality whey protein. It must be cold pressed whey protein derived from grass fed cows, and free of hormones, chemicals and sugar. Quality Gwhey provides all the key amino acids for glutathione production (cysteine, glycine and glutamate) and contains a unique cysteine residue (glutamylcysteine) that is highly bioactive in its affinity for converting to glutathione. Glutamylcysteine is a bonded cysteine molecule (cysteine plus glutamate) that naturally occurs in Bovine Serum Albumin – a fragile immune component of the whey. This unique cysteine is exclusive to whey and rarely appears in other protein foods – which makes whey protein the best glutathione-promoting food source. Furthermore, whey provides critical co-factors, immunoglobulins, lactoferrin and alpha Lactalbumin (also a great source of cysteine), which together help create the right metabolic environment for high glutathione activity.
  • Raw milk products, raw eggs and meat: Glutathione occurs in the highest levels in fresh, uncooked meats and raw milk, but is almost entirely absent in pasteurized dairy products.
  • Fresh fruits and vegetables provide excellent glutathione, but once cooked, values become negligible. Spinach, potatoes, asparagus, avocado, squash, okra, cauliflower, broccoli, walnuts, garlic and tomatoes have the highest glutathione per serving.
  • The herb milk thistle is an excellent source of the antioxidant compound silymarin, which may help to prevent glutathione depletion in the liver. Glutathione is crucial in the liver for detoxification and can become depleted from acetaminophen (Tylenol), alcohol consumption, and general toxic overload.
  • Curcumin may also be useful for increasing glutathione levels.

Keeping your glutathione levels up is a matter of increasing factors that boost your glutathione and decreasing factors that lower it. The things that deplete your glutathione the fastest are chemicals, toxins and sugar.