Size: 1-Pack Animal Essentials' Plant Enzymes & Probiotics relieves the extra burden placed on the digestive system by breaking down fats, carbohydrates, cellulose and protein. It contains a blend of plant and microbial produced enzymes, none of which come from animal sources. Animal derived enzymes will work in only one area of the digestive system (stomach and intestines), while plant and microbial enzymes work throughout the whole system. Since our enzymes also work over a broader pH range they are active longer in the entire digestive process, reducing the food into usable components.