Vet Classics Enzymes Probiotics (4 oz) Delivers a powerful combination of concentrated enzymes and probiotics designed to aid in promoting healthy digestion in pets Safe for dogs and cats over 6 weeks This Vet Classics supplement is derived completely from vegetable sources not from animals. Made with natural, live microorganisms and beneficial digestive enzymes such as alphaamylase, protease, cellulase, and lipase, Vet Classics Enzymes Probiotics is specially formulated to help your pet feel better and stay healthy. Helps to improve digestive function, Strengthens immune system.