Royal Canin Size Health Nutrition Medium Aging 10+ Dry Dog Food, 30-lb bag

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Medium-sized dogs are famous for their energy, and were historically working dogs. Whether your medium dog is an indoor companion or spends time hunting outdoors, Royal Canin Medium helps these dogs maintain natural defenses throughout their life, while providing the balanced energy the medium dog needs to maintain a healthy weight.

Key Benefits
  • For dogs over 10 years old between 21 & 55 pounds
  • A selection of nutrients to support healthy aging and maintaining healthy bones and joints
  • Contains EPA, DHA and antioxidants to help support cellular health
  • Helps facilitate intestinal transit with an adapted fiber content
  • Contributes to good stool quality with proteins selected for their high digestibility

See all items by Royal Canin

  • Item Number
  • Weight
    30.0 pounds
  • Brand

    Royal Canin

  • Brand

    Royal Canin Size Health Nutrition

  • Breed Size

    Medium Breeds

  • Food Form

    Dry Food

  • Lifestage


  • Made in

    United States

Nutritional Info

Brewers Rice, Chicken By-Product Meal, Corn Gluten Meal, Wheat, Chicken Fat, Natural Flavors, Dried Plain Beet Pulp, Brown Rice, Corn, Wheat Gluten, Fish Oil, Dried Tomato Pomace, Vegetable Oil, Psyllium Seed Husk, Potassium Chloride, Salt, Calcium Carbonate, Fructooligosaccharides, Vitamins [Dl-Alpha Tocopherol Acetate (Source Of Vitamin E), Niacin Supplement, L-Ascorbyl-2-Polyphosphate (Source Of Vitamin C), D-Calcium Pantothenate, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Riboflavin Supplement, Thiamine Mononitrate (Vitamin B1), Vitamin A Acetate, Folic Acid, Vitamin B12 Supplement, Vitamin D3 Supplement], Hydrolyzed Yeast, Choline Chloride, L-Tryptophan, Glucosamine Hydrochloride, Taurine, Trace Minerals [Zinc Proteinate, Zinc Oxide, Manganese Proteinate, Ferrous Sulfate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], Magnesium Oxide, Gla Safflower Oil, Marigold Extract (Tagetes Erecta L.), Green Tea Extract, L-Carnitine, L-Tyrosine, Chondroitin Sulfate, Rosemary Extract, Preserved With Mixed Tocopherols And Citric Acid.

Caloric Content

3668 kcal/kg, 290 kcal/cup

Guaranteed Analysis
Crude Protein 24.0% min
Crude Fat 12.0% min
Crude Fiber 3.6% max
Moisture 10.0% max
EPA 0.17% min
DHA 0.07% min
Glucosamine 371 mg/kg min
Chondroitin Sulfate 4 mg/kg min
Feeding Instructions
Weight Low Activity Daily Feeding (cup) Medium Activity Daily Feeding (cup) High Activity Daily Feeding (cup)
20 lbs 1 5/8 1 7/8 2 1/8
22 lbs 1 3/4 2 2 1/4
24 lbs 1 7/8 2 1/8 2 1/2
26 lbs 2 2 3/8 2 5/8
29 lbs 2 1/8 2 1/2 2 7/8
31 lbs 2 1/4 2 5/8 3
33 lbs 2 3/8 2 3/4 3 1/8
35 lbs 2 1/2 2 7/8 3 1/4
37 lbs 2 5/8 3 3 1/2
40 lbs 2 3/4 3 1/8 3 5/8
42 lbs 2 7/8 3 1/4 3 3/4
44 lbs 3 3 3/8 3 7/8
46 lbs 3 3 1/2 4
49 lbs 3 1/8 3 5/8 4 1/8
51 lbs 3 1/4 3 3/4 4 1/4
53 lbs 3 3/8 3 7/8 4 1/2
55 lbs 3 1/2 4 4 5/8

1 cup = 8 oz

This is only a guide. Optimal feeding amounts may vary according to your pet's temperament, activity level and environment. If you have any questions regarding your pet's health, please contact your veterinarian.

Transition Instructions

We recommend at least a 7 day transition before you begin feeding the new food exclusively. Start by mixing 75% of the old diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the old diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the old diet with 75% of the new diet. On the 7th day, you can feed the new food exclusively. This allows your pet’s digestive system to smoothly adapt to the new food.


How are Royal Canin diets preserved?

All of our dry diets are preserved naturally with mixed tocopherols, citric acid, and rosemary extract. Our canned diets are naturally preserved and sterilized during the cooking and canning process.

Where do the ingredients in Royal Canin diets come from?

We select our ingredients based on multiple factors, including the supplier’s compliance with our quality and food safety requirements, consistent availability, and on the nutrients required to meet the dietary needs of the pet.Royal Canin is making strides towards sustainability by attempting to obtain sources of raw materials as close to each manufacturing facility as possible. In some cases, we use international suppliers, because only those suppliers can offer raw materials that comply with our quality and food safety standards.

Why do some Royal Canin diets contain by-products?

Royal Canin chooses ingredients because they deliver high-quality nutrients that support our customized pet food formulas. Using chicken by-product meal instead of chicken meal for example will allow Royal Canin to maintain its highly customized nutrient standards while achieving a more secure and sustainable supply.

Why do some Royal Canin diets contain grains?

Grains can be a healthy part of any cat or dog’s diet. As always, we focus on the nutrients each ingredient provides and grains can provide many important nutrients.

How do you ensure Royal Canin diets are safe for my pet?

Our Quality and Food Safety systems are state-of-the-art and we continue to invest heavily in new technology to make sure they remain that way.* We put our suppliers through a rigorous selection process that doesn’t end with our first purchase.* We monitor every load delivered to our plants to verify the safety and quality of the ingredients we use to make pet food.* We perform tests on finished pet foods before they are shipped to our customers.* We manufacture every pet food we sell, in plants that we own; our plants are ISO 9001:2008 certified for Quality Management and ISO 22000 certified for Food Safety.

How do I know which Royal Canin diet is right for my pet?

Based on size, age, lifestyle, and breed, each cat or dog has unique nutritional needs. For healthy pets, use our Product Selector to find the right diet for your cat or dog.If your pet is experiencing health issues, please refer to your veterinarian for more information. Your veterinarian will consider multiple factors when recommending an appropriate diet.

Customer Reviews
29 Reviews 29 Reviews 4.9 out of 5 Stars

100% Recommend

100% of reviewersrecommend this product

4.9 / 5

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  • He ate it!

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    My 11 year old Irish Red and White setter is a very finicky eater. He has been on Royal Canin for years, but I just switched to the 10yrs plus formula. We have had to mix a wet food into dry for months. This morning I put his new food down for him and he didn’t hesitate but starting eating right away. So glad he likes this!

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  • A Lot For Your Money

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    My dogs were put on this by the vet. The pieces are large so I would not recommend it for small dogs, but my medium size ones do okay with it. It is definitely a heavy bag and lasts 2 dogs about 3 weeks.

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  • Love this food!

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    Our dog is so excited for dinner time! Love the food and love chewy.com!

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  • My dog loves this.

    By on

    I mix the aging and the weight control together. My dog loves it.

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  • Cuisine to your door

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    Quick, efficient and easy to do! Been committed to chewy.com for several years. It save time and money! Even got my mom to do this over the phone! Wonderful service.

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  • Senior Eating

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    Finally my senior dog is wanting to eat again! He has always eaten Royal Canin food but it has been difficult to find this particular product in local pet food retail outlets forcing us to dink around with other products. He got to where he didn't really want to eat. Finally after researching dog food; I found Chewy carries the RC Medium Aging 10 + Dry Dog Food. Chewy is a life saver.

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  • Awsome food!!

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    I have a 17 year old pit bull. The past 3 years since her brother passed, it has been a struggle to get her to stay interested in a food. I even had my vet give me prescription food. She would stay interested in it for less than a week. I had a free coupon for this food and said "hey why not!" It has been a month and she is still eating it. I even bought the can food and the same results. The kibbles are a perfect size for her. Not to small for her to swallow whole. It's also maintaining her weight. Awsome food! Well worth the price.

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  • Chewy Rocks

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    Great shipping, fast and well-packaged, Great, fresh product!

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  • Picky Princess!

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    First, I love Chewy.com! Their service is incredible! thank you for your fast shipping and working one on one with my vet to ensure I am choosing the proper diet! Royal Canin is a great brand!! My picky princess easily transitioned from another brand to this!

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    By on

    To early to tell at this time if improving my pups ? re; coats,skin,ect..,

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