Comple-Zyme Digestive Aid Formula for Dogs - 100 Chewable Tablets Comple-Zyme can supply all the digestive enzymes needed to help in digestion of foods. As the body ages it produces less essential digestive enzymes. Genetics, stress, disease and most commercial foods contribute directly or indirectly to the lack of enzymes. Digestive enzymes are essential in order to maintain good health and helps prevent excess gas, loose stools and stool eating.