Iams Active Maturity contains an exclusive antioxidant blend with Vitamin E and Beta-Carotene to help boost your senior dog's immune system response to healthy levels, and is designed for dogs ages 5+ and 50+ lbs. This Iams ProHealth formula contains prebiotics that work inside the digestive tract to promote healthy digestion and strong defences, as well as natural sources of glucosamine to promote healthy joints. Included in the formula is easy to chew Iams Daily Dental Care, which reduces tartar build-up by up to 50%. Protein sourced from chicken and egg helps to build strong, firm muscles while seven essential nutrients nourish the heart. Vet recommended, this premium dog food is 100% complete and balanced, with no artificial preservatives or fillers.