IAMS™  Mature Adult Large Breed

IAMS Mature Adult Large Breed nurtures your dog’s bones and joints through specially formulated nutrition with natural sources of glucosamine blended with fat-burning L-carnitine to help keep him fit, active, and living large.
  • Strong Immune System Strong Immune System Enriched with antioxidants to help develop a strong immune system.
  • Healthy Joints Healthy Joints Formulated to nourish healthy joints.
  • Healthy Metabolism Healthy Metabolism Formulated with L-carnitine to help burn fat and maintain healthy metabolism.
  • Healthy Heart Healthy Heart Nourishes the heart with 7 essential nutrients.
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Chicken, Chicken By-Product Meal (Source of Chondroitin Sulfate and Glucosamine), Ground Whole Grain Barley, Ground Whole Grain Corn, Ground Whole Grain Sorghum, Dried Beet Pulp, Chicken Meal, Natural Flavor, Brewers Dried Yeast, Dried Egg Product, Caramel Color, Marine Microalgae, Sodium Hexametaphosphate, Potassium Chloride, Calcium Carbonate, Choline Chloride, Carrots, Fructooligosaccharides, L-Lysine Monohydrochloride, Vitamin E Supplement, Beta-Carotene, Ferrous Sulfate, L-Carnitine, Zinc Oxide, Mixed Tocopherols (a preservative), Ascorbic Acid, Sodium Selenite, Calcium Pantothenate, Biotin, Thiamine Mononitrate (source of vitamin B1), Vitamin B-12 Supplement, Vitamin A Acetate, Manganese Sulfate, Copper Sulfate, Niacin Supplement, Riboflavin Supplement (source of vitamin B2), Inositol, Pyridoxine Hydrochloride (source of vitamin B6), Vitamin D3 Supplement, Rosemary Extract, Manganous Oxide, Folic Acid, Potassium Iodide
Weight of Dog (lbs.) Amount Per Day
50lb 2 3/4 – 3 1/4c
60lb 3 – 3 2/3c
70lb 3 1/2 – 4c
80lb 3 3/4 – 4 1/2c
100lb 4 1/2 – 5 1/4c
120lb 5 1/4 – 6c
140lb 5 3/4 – 6 3/4c

c = cups; 1 cup = 97 grams

These guideline amounts are a starting point and your dog may need more food depending upon age, activity, and 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.

Remember to have clean, fresh water available for your dog at all times.

Because IAMS Mature Adult Large Breed dog food is complete and balanced for adult dogs, you do not need to add vitamin or mineral supplements.

When introducing IAMS dog food, gradually mix it with your dog's current food over the course of 4 days.

SAFE HANDLING TIPS FOR ANY PET FOODS AND TREATS: Please wash your hands before and after handling any pet food or treat. Wash pet food bowls with soap and hot water after each use.

Replace 1 1/2 cups (128 g) for each can of Iams Senior with Slow Cooked Chicken and Rice (375 g).

Crude Protein (min) 26.00%
Crude Fat (min) 11.00%
Crude Fat (max) 13.50%
Crude Fiber (max) 5.50%
Moisture (max) 10.00%
Docosahexaenoic Acid (min) 0.05%
Calcium (min) 1.15%
Phosphorus (min) 0.90%
Vitamin E (min) 140
IU/kg Beta Carotene (min) 10 mg/kg*
L-Carnitine (min) 30 mg/kg*
Omega-6 Fatty Acids (min 1.​60%*
Glucosamine (min) 350 mg/kg*
Chondroitin Sulfate (min) 35 mg/kg*

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

Mature Adult Large Breed is rated 4.5 out of 5 by 95.
Rated 5 out of 5 by from Yummy says the doggo Iams mature adult dry dog food for large breeds was perfect for my big picky eater. He loves the chicken flavor. It also contains grains, carrots, chicken fats and beets, but he doesn't worry about that. I want the best for my fur babies. Iams helps strong digestion, healthy cognition, and promotes strong immune system. Iams is best for healthy teeth, bones joints, and healthy energy for my old boy. He deserves the best.
Date published: 2021-03-29
Rated 5 out of 5 by from My dog loves this dog food! My dog loves this dog food. My American Bulldog has some issues with food and she has done really with this dog food since we got it. I'm pleased with how well she is doing on it and has had no issues. I will be buying it again for her.
Date published: 2021-03-27
Rated 3 out of 5 by from Not my doggos favorite So we have used vin IAMs before and not had an issue but Jackson our lab rescue wasn’t having this one. J will say they do have a much stronger smell very pungent I guess you could say. He would sniff out them in his mouth then spit them out. Now that being said he is kind of a diva and very much a picky eater. We decided to donate it to our local ASPCA and they were very greatful.
Date published: 2021-03-27
Rated 5 out of 5 by from Doggy approved I really was happy with this dog food ..I have a very old boxer who now has a sensitive stomach and not many teeth left so we used this mixed with wet food and he absolutely loves it. He's become very picky about what he eats and as soon as I offered it to him he devoured the whole bowl. Im happy with it since chicken is the #1 ingredient and I want to make sure I feeding my old man a healthy diet.
Date published: 2021-03-27
Rated 5 out of 5 by from Dogs feel great! I got the Iams large breed for ilder dogs to help my 11 year old pit bull . Since starting her on this food she has really showed her puppy side again. She seems healthier and has more energy than she has in years. The natural ingredients make me confident in this food and feeding it to her. She is part of our family and worth it. Thank you Iams for giving us our puppy back.
Date published: 2021-03-24
Rated 5 out of 5 by from Happy old dog My old man is a 10 year old Rottweiler. He's had a healthy life but age has definitley been catching up to him. He's been eating the Iams health mature food for senior dogs and we have noticed a healthy different. First off he is having regular bowl movements. Not uncomfortable or constipated ad he was in the past. His coat seems to be glossy and has less irritation. As the biggest factor he loves it! Meal time he's always eager to eat and finishes his bowl no problem.
Date published: 2021-03-24
Rated 5 out of 5 by from my dogs love it. My older dogs really love this dog food,and I love the fact that its good for them, and will be buying this food from now on, because its both quality and has a great price, and I highly recommend to anyone with older dogs because it has what they need.
Date published: 2021-03-23
Rated 5 out of 5 by from Marley loves it The most important thing about a dog food for older dog's is if they eat it and Marley loves the taste of Iam's Proactive Health Real Chicken Senior Dog Food. The minute we put it in her bowl it is gone. The additional features are an added value with the DHA for marine algae and Glucosamine/Chondroitin.
Date published: 2021-03-22
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