How to Raise Glutathione with a Vegan Diet and Lifestyle Dietitian Sulfur rich foods support glutathione,an intracellular antioxidant that helps cells detoxify. #plantbased The Best Foods To Boost Your Body's "Master Antioxidant" As I mention in my book, N acetyl cysteine (NAC) is not found in food sources, but in the body, it converts into cysteine. NAC acts as a precursor to glutathione, a powerful