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

ProActive Health™ Mature Adult Large Breed is rated 4.4 out of 5 by 73.
Rated 5 out of 5 by from My senoir loves Iams! I have had Diie on Iams for several months now, her coat is glossy, her step peppy. She eats every morsel and asks for more.
Date published: 2021-02-09
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 Buddy Loves IAMS My dog(yellow Lab) is eating IAMS food from 9 years, he loves it
Date published: 2020-05-13
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 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 3 out of 5 by from SO SO I bought this for my dogs, but they were not overly excited about it.. They ate it , but did not particularly care for it any more than the less expensive foods.. Iams is very expensive to buy - even with a coupon'
Date published: 2016-03-01
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 4 out of 5 by from Great Nutrition My dog loved this food and was very happy to switch. Great nutrients and helped skin and coat
Date published: 2016-02-13
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