Animal Health Company Prozyme is a pro-biotic powder containing healthy pro-biotics for dogs and cats, works in the digestive system and overpopulates bad bacteria with beneficial bacteria. The introduction of this bacteria will help to maintain the balance as nature intended. Probiotics are naturally occurring cultures of specific strains of beneficial bacteria. These organisms work together in the gut to assist lactic acid production, producing digestive enzymes to aid normal gut function, aiding the immune system and helping to supply vitamins, nutrients and trace elements.