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

Proactive Health™ Mature Adult Large Breed Dry Dog Food Chicken and Whole Grains Recipe is rated 4.5 out of 5 by 103.
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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 4 out of 5 by from My parents Senior dogs seem to like it! [This review was collected as part of a promotion.] I decided to have my parents' Senior dogs try this. They are getting picky in their older age and completely turned their noses up at the last bag of dog food my parents decided to have them try. However, they seem to really like this food! I like that it is specially formulated for older dogs. One of my parents' dogs has always walked with a limp - he was a stray that wandered onto their property as a pup and they think he was injured by his former owners. His joints have been getting worse and worse lately, so I'm hoping this food might help with that. So far, they're really enjoying it!
Date published: 2021-04-07
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 Great Food For Your Senior Dog! [This review was collected as part of a promotion.] The IAMS Proactive Health is a great dog food for older dogs. Our golden retriever Jack has suffered with arthritis in his hips for the last few years. He is 14 years old and still loves to play but seems to be slowing down some. We are very picky what he eats, we want only the best for him. We were looking for another dry food for Jack and came across the IAMS proactive Health. Jack really enjoys this dry food. We have noticed that he is more playful than ever, he has a sensitive stomach and this seems to not bother his stomach at all. This is now Jacks new dry food.
Date published: 2021-03-16
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 5 out of 5 by from A Brand I Trust for My Dog [This review was collected as part of a promotion.] IAMS is a dog food brand that we've used for our pets for decades. The ingredients for this product are really great for mature dogs that don't need a heavy fat load / deep calories. As a dog ages, their metabolism begins to change, just like for us. This blend accommodates for that change in activity level and provides our dog the balanced nutrition that she needs to stay healthy as she ages. Knowing that IAMS uses good ingredients and that they also have real chicken in this formula is a really good thing for us as we seek quality dog products and food for our pets. IAMS is a great brand and I'd highly recommend giving them a try.
Date published: 2021-03-14
Rated 4 out of 5 by from Dogs like it [This review was collected as part of a promotion.] I have two senior dogs and have been looking for a something to feed them that I know is good for them in their aging years. I was worried about just switching them right over and causing digestive issues so I gradually started them off by mixing this in with their other food. It was funny to watch as they were digging in their bowls to find the morsels of this food over their other. It looks to me as they prefer it over the one they have been eating for years.Over a period of a week a gradually added more Iams to their food and they continued to enjoy it. I am happy to know my aging family members are getting much better quality food.
Date published: 2021-04-04
Rated 5 out of 5 by from Fur Babies Loved It! [This review was collected as part of a promotion.] We normally purchase Rachael Ray for our two fur babies, one of whom has a very sensitive tummy, and cannot tolerate many of the low-end dog foods with lots of fillers and junk in them. We have to be very careful what he eats. The first thing I did upon receiving this was to check the ingredients and nutrition chart. I found only good things!! And they both love it!
Date published: 2021-04-10
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