Prozyme . Prozyme replaces the essential enzymes that are lost during food processing or aging and allows your pets to absorb more nutrients that are present in their food. For dogs and cats. What is ProZyme? ProZyme is an all-natural, plant-derived combination of four digestive enzymes in a pleasant-tasting powder form. Prozyme is a multi-enzyme digestive product, really helpful for some dogs and cats with decreased stomach or intestinal digestion. Supplements categorized by therapeutic action: Antioxidants : Rx Vitamins Nutritional Support provides nutrients and anti-oxidants for pets who are coping with a serious disease, or not eating well.