Feline Digestive Enzymes™4 oz. More and more veterinarians and cat nutrition experts are finding our cats deficient in digestive enzymes. Veterinarians report a wide range of improvements, including healthier hair coat and skin, more resistance to illness, more vigor and mobility, and maintenance of good body weight. They are increasingly recommending digestive enzyme supplements for bowel disease, digestive irregularities and chronic diarrhea. Dr. Goodpet's Feline Enzymes are made from natural plant sources, shown by research to be highly effective, less costly, and with a wider range of activity than animal-based enzyme supplements. Research also shows a strong link between enzyme deficiency and disease.