BiOptimizers Gluten Guardian 90 capsAbout this article Aids Digestion: By taking Gluten Guardian 4. 0 before meals, this digestive enzyme supplement can help your body digest gluten found in wheat, barley, and other cereal grains, as well as help digest casein found in dairy products Improve Absorption: This digestive supplement also contains other enzymes to help improve the digestion of carbohydrates as well as hard to digest proteins. By improving the absorption of these, it can help