The Iams ProActive Health Large Breed Adult Maintenance Dry Dog Food has Probiotics that work inside the digestive tract to promote healthy digestion & strong defenses. Designed for dogs ages 1+ year and 50+ lbs, Iams ProActive Health dog chow is specially formulated to help maintain your dog's healthy joints. Protein sourced from chicken & egg helps build strong, firm muscles while 7 essential nutrients nourish the heart. Antioxidants help maintain a strong immune system. Healthy inside. Healthy outside. Helps maintain your large dog's healthy joints Protein sourced from chicken & egg helps build strong, firm muscles 7 essential nutrients nourish the heart Antioxidants help maintain a strong immune system Crunchy kibbles scrub your dog's teeth to help reduce plaque and tartar buildup Remember to have clean, fresh water available for your dog at all times Iams ProActive Health Large Breed Adult Maintenance dry dog food is formulated to meet the nutritional levels established by AAFCO Dog Food Nutrient Profiles for Maintenance. Manufactured under U.S. Patent Nos. 5,616,569, 5,932,258, 6,093,418 and 6,238,708; other U.S. and foreign patents pending. For dogs ages 1+ year and 50+ lb. Vet recommended, this premium dog food is 100% complete and balanced, with no fillers or artificial preservatives 100% Satisfaction Guaranteed These guideline amounts are a starting point and your dog may need more food depending upon age, activity & temperament. In order to reach optimal body condition, you may need to adjust food intake. This represents the total recommended volume of food per day. You should divide the total recommended feeding amount by the number of times you feed your dog per day to get the actual portion size per feeding. Large breed puppies, reaching 51 - 90 lb. at maturity, should transition to Iams ProActive Health Large Breed formula at 12 months of age Giant breed puppies, over 90 lb. at maturity, should transition to Iams ProActive Health Large Br