Iams is veterinarian recommended. 100% satisfaction guarantee. No added gluten. 7 essential nutrients for healthy heart. Omega-6's for healthy coat. Iams proactively nourishes your dog to promote the signs of healthy vitality. Strong Immune System: Enriched with antioxidants to help maintain a strong immune system. Strong Muscles: Builds strong, firm muscles with protein sourced from chicken and egg. Strong Bones: Fortified with essential minerals to help maintain strong bones. Puppy (1-12 Months): brain; bones; healthy digestion; immunity. Adult (1-6 Years): muscles; healthy digestion; heart; coat. Senior Plus (11+ Years): immune; bones & joints; teeth; weight. Iams ProActive Health Mini Chunks Dog Food is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for Maintenance.