Mature Adult Large Breed Dry Dog Food Chicken and Whole Grains Recipe

Mature Adult Large Breed Dry Dog Food Chicken and Whole Grains Recipe is rated 4.4 out of 5 by 68.
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IAMS Mature Adult Large Breed Dry Dog Food is made with real ingredients. Our recipe starts with farm-raised chicken and includes wholesome grains. It’s formulated to help boost the immune system of older dogs with an antioxidant blend that includes vitamin E and beta-carotene. Plus, our crunchy, kibble helps provide your senior dog with healthy skin and coat, strong muscles and bones, and reduced plaque. Look for the IAMS difference.

Available in the following size:

  • 13.61 kg


  • Enriched with antioxidants to help develop a strong immune system
  • Formulated to nourish healthy joints.
  • Formulated with L-carnitine to help burn fat and maintain healthy metabolism.
  • Nourishes the heart with 7 essential nutrients.


  • 3439 kcal ME/kg
  • 346 kcal ME/Cup


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 Dried Yeast, Dried Egg Product, Carrot, Marine Microalgae (source of DHA), Caramel Color, Sodium Hexametaphosphate, 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), Carrot, Calcium Carbonate, Fructooligosaccharides, Choline Chloride, Beta Carotene, L-Carnitine, Mixed Tocopherols (preservative), Citric Acid (preservative), Rosemary Extract

Feeding Guideline

100% Complete & Balanced for Adult Maintenance 







Replace 1 1/4 cup (126 g) for each can of IAMS Chicken and Rice (369 g) 



2 3/4 - 3 1/4

277 - 327



3 - 3 2/3

302 - 369



3 1/2 - 4

352 - 402



3 3/4 - 4 1/2

377 - 453



4 1/2 - 5 1/3

453 - 536



5 1/4 - 6

528 - 603



6 - 6 3/4

603 - 679

lbs = pounds     kg = kilograms     c = cups     g = grams    1c = 101 g

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.

Guaranteed Analysis

Crude Protein (min) 26.0%
Crude Fat (min) 11.0%
Crude Fat (max) 13.5%
Crude fibre (max) 5.5%
Moisture (max) 10.0%
Docosahexaenoic Acid (min) 0.05%
Calcium (min) 1.15%
Phosphorus (min) 0.9%
Vitamin E (min) 140 IU/kg
Beta Carotene (min) 10 mg/kg*
L-Carnitine (min) 30 mg/kg*
Omega-6 Fatty Acids (min) 1.6%*
Glucosamine (min) 350 mg/kg*
Chondroitin Sulfate (min) 35 mg/kg*


Rated 5 out of 5 by from We own a young, 3 yr. old, 110lb. Pitt Bull who developed hip issues less than 2 years of age. After supplementing his food with over OTC supplements, we discovered the Iams food containing the need ingredients for his joint health. Within two weeks of feeding all of out Pits this food, we noticed an amazing difference in the activity of all of these guys!! Apollo was now able to run, jump and play like his older Brother and Sister. I highly recommend this food to anyone who has a "kid" with joint and energy issues!! Hands down, the best nutrition available!! Dean & Kaye, Canton, GA.
Date published: 2009-12-13
Rated 5 out of 5 by from I am an Iams Girl! My daddy has always feed me Iams. We were on the green bag, but now we get a purple bag. They have both been awesome! I recently had my 6 month checkup, and it was with a new lady in a white coat. The other lady in the white coat that saw me for the past 10 years retired. :( This new lady said I looked like I was 2 or 3! She really knows how to flatter a girl! While mostly, it is my daddy's good care, I think eating Iams all my life has helped too!
Date published: 2010-07-09
Rated 5 out of 5 by from More Energy and Playful Our 7-1/2 year old Australian Red Heeler has been on Iams since we rescued her at age 1-1/2. We changed to the Mature formula about four months ago and the first thing we noticed was Maggie is initiating playtime with toys again, something she'd stopped doing about a year ago. She seems to by "younger" in her energy levels.
Date published: 2016-03-21
Rated 4 out of 5 by from Great food, tough bag. I switched my finicky senior dog to Iams a year ago, he loves it. Then when I got my kitten, I started her on it and she loves it. It's a pricy food for me, but I want the best I can afford. But, I find the bags difficult to open, I have issues with my hands. I would love to see a pull string or tab. THAT is the only reason I didn't give it 5 stars. I would love to get some coupons to help alleviate my tight budget.
Date published: 2016-02-27
Rated 5 out of 5 by from great product My Golden is now 12 years od and is still acting like a puppy he plays with his toys and my other dog. He is doing great and the only food he gets is IAMS.
Date published: 2009-08-16
Rated 5 out of 5 by from My Dog is 14 and has always been on Iams Dog Food My dog has been on eating Iams since he was 6 weeks old. He is now 14. We never altered his food. He is a mix breed, lab terrier mix.
Date published: 2019-05-05
Rated 5 out of 5 by from Great product! I don't like to advertise things for free. But I will do an exception because it changed the health of my dog quite a lot in a few days. My old 16 years Belgian shepherd started to develop some intestine problem and one day started to reject her food ( good brand dog food and she has eaten for many years) after getting older, she has got more problems, muscle sores and incontinence peeing sometimes when she is sleeping, etc. After getting some extra problem with her stomach, part of getting old too:( she started to reject her food and start losing weight so fast, she only accepts sometimes cookies but nothing else, no doggy food at all. I read about changing her food to a new one for seniors, and I have tried this brand. The first package is almost empty, she loved it, she gets excited again and runs to get her doggy food ( she didn't do it for a long time) and she is getting a healthy weight and also last 3 weeks there are not symptoms of incontinence while she sleeps.
Date published: 2021-01-08
Rated 5 out of 5 by from My old guy loves it :) We switched to IAMS Large Breed Mature when our 8 year old Boxer started having more digestive issues. After being on the product for about 6 months now, not only does he like the food but we have less tummy issues to contend with. Will for sure continue to use this variety.
Date published: 2016-02-11
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