Natures Plus GI Natural Bi-Layered Tablets feature a fast-release layer to optimise digestive comfort and energy, while the slow-release layer cleanses and revitalises. This outstanding formula starts with 1000 mg L-glutamine, enzyme-rich and alkalising whole foods, prebiotics and probiotics. *Then, GI Natural supplies calcium for normal function of digestive enzymes, and zinc, which protects cells from oxidative stress, and contributes to normal acid-base metabolism and metabolism of carbohydrates and fatty acids, to help you on your way towards Digestion Perfection.