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IAMS Proactive Health Mature Adult Large Breed Chicken Dry Dog Food

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Your large breed senior dog is one-of-a-kind. That's why IAMS makes mature dog food That's just as unique as they are.

IAMS Mature Adult Large Breed Dry Dog Food with Real Chicken was created to meet the specific wellness and nutritional needs of your older big dog. With real, farm-raised chicken as the first ingredient, this dry dog food is formulated to support healthy bones and joint health in canines with a balance of key nutrients formulated for large breed senior dogs.

A blend of fiber and prebiotics promotes healthy digestion. Plus, the tasty dog kibble supports a strong immune system with antioxidants for optimal health. When you feed your mature large dog IAMS dry food, you can feel good knowing they're getting the nutrition they need to bring out their unique best.

Key Benefits:

  • 1st ingredient is real, farm-raised chicken in this healthy dog food
  • Formulated to support healthy bones and joint health with a balance of key nutrients for large aging dogs
  • Promotes healthy digestion with a blend of fiber and prebiotics
  • Supports a strong immune system with antioxidants
  • Veterinarians recommend IAMS

Feeding Guidelines:

Weight of Dog (kg)

 Amount per Day


2 - 3 c


3 - 3c


3 - 4 c


3 - 4 c


4 - 5 c


5 - 6 c


5 - 6 c

These guidelines are a starting point, and your pet may need more or less food depending on age, activity level and temperament. In order to reach optimal body condition you may need to adjust food intake.

Nutritional Analysis:

Guaranteed Analysis
Crude Protein min 26%
Crude Fat min 11%
Crude Fiber max 13.5%
Moisture max 5.5%
Docosahexaenoic Acid min 10%
Calcium min 1.15%
Phosphorus min 0.9%
Vitamin E 140 IU/kg
L-Carnitine min 30 mg/kg*
Beta Carotene 10 mg/kg*
Omega-6 Fatty Acids min 1.6%*
Chondroitin Sulfate min 35* mg/kg*

*Not recognized as an essential nutrient by the AAFCO Dog Food Nutrient Profiles


Chicken, Chicken By-Product Meal, Ground Whole Grain Barley, Ground Whole Grain Corn, Ground Whole Grain Sorghum, Dried Plain Beet Pulp, Chicken Meal, Natural Flavor, Brewers Yeast, Dried Egg Product, Carrot, Marine Microalgae (source of DHA), Caramel Color, Potassium Chloride, Calcium Carbonate, Fructooligosaccharides, Choline Chloride, Vitamins (Vitamin E Supplement, Ascorbic Acid, Calcium Pantothenate, Biotin, Thiamine Mononitrate (source of Vitamin B1), Vitamin B12 Supplement, Vitamin A Supplement, Niacin, Riboflavin Supplement (source of Vitamin B2), Pyridoxine Hydrochloride (source of Vitamin B6), Vitamin D3 Supplement, Folic Acid), Minerals (Ferrous Sulfate, Zinc Oxide, Sodium Selenite, Manganese Sulfate, Manganous Oxide, Potassium Iodide), Beta Carotene, L-Carnitine, Mixed Tocopherols (preservative), Citric Acid (preservative), Rosemary Extract.

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