Why IAMs Mature Adult Large Breed Recipe? Not all dogs are the same, so why feed them the same generic food? The IAMs brand understands that mature large breed dogs have unique needs. That's why we've crafted our IAMS Mature Adult Large Breed recipe with a special DHA supplement to promote alertness and mental sharpness, and fortified it with key nutrients to maintain healthy bones and joints. With this premium tailored recipe, you can be confident that your big dog will always be at their best, today and every day.Look for the IAMs Difference. Healthy CognitionIncludes DHA Gold® to promote alertness and mental sharpness.Strong Immune SystemAntioxidant blend with Vitamin E & beta-carotene to help boost the Immune response of older dogs to healthy adult levels.Healthy EnergyWholesome grains provide essential nutrients & carbohydrates for healthy energy.Healthy Bones & JointsWith Glucosamine and Chondroitin Sulfate. Formulated for healthy bones & joints.Healthy DigestionTailored blend of wholesome fiber & natural prebiotics for healthy digestion.Healthy TeethCrunchy kibbles scrub your dog's teeth with every bite, to help reduce plaque and tartar buildup that can lead to bad breath. IAMS Proactive Health Mature Adult Large Breed Dog Food is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for maintenance. Veterinarians Recommend IAMS DHA Gold® Promotes Alertness & Mental Sharpness Made with Real Wholesome Ingredients