PURINA ONE Adult with IMMUNE DEFENCE PLUS+ has been specially formulated with beta glucans, vitamin C & E and omega 3 & 6 fatty acids. Working in parallel this blend helps support first line immune defence for your cat: Vitamin E & C are natural antioxidants that help prevent cell damageassociated with aging and poor health Omega 3 & 6 fatty acids helps keep skin healthy to maintain a strong barrierto the external environment Beta glucans to help support optimal immune response. PURINA ONE Adult Dry Cat Food with Salmon provides complete and balanced nutrition to help your cat stay in good health, whatever the day brings. High Nutrient Absorption from high quality ingredients Digestive Health supported by prebiotic fibre Helps Reduce Tartar & Plaque Build-Up: Crunchy kibble encourages chewing for natural dental hygiene