Farmina Vet Life Gastrointestinal is a complete dietetic food for cats, suggested for the reduction of acute intestinal absorptive disorders; it is recommend for the compensation for mal-digestion and for exocrine pancreatic insufficiency.All Farmina Vet Life products require a prescription from your pet's veterinarian. Please email HappyPet@Farmina.com a copy of your prescription and order number within 48 hours to authorize your purchase. Any Vet Life orders that are not authorized will be canceled and refunded within 72 hours.