Purina One Sensitive Dry Cat Food is specifically designed for the health and well-being of cats with sensitive digestion and delicate appetite. Having a balanced gut microbiome is essential for your cat's good health. Purina One BIFENSIS is a nutritional formula with beneficial functional bacteria: Lactobacillus, scientifically proven to strengthen your cat's natural defences from the inside out and help protect a healthy gut microbiome. This tasty food contains high-quality ingredients, including a prebiotic: chicory, which nurtures good bacteria in the gut to improve your cat's gut microbiome for maintaining your cat's health.