Updated 12 May 2023
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Royal Canin Medium Adult Review

Type of food

Complete dry extruded

Dog types

Pet dogs

Breed sizes

NOT suitable for toy breed dogs
Adult weight 1-4kg. e.g. Chihuahua, Pomeranian, Yorkshire Terrier
NOT suitable for small breed dogs
Adult weight 4-10kg. e.g. Beagle, Dachshund, Jack Russell
Suitable for medium breed dogs
Adult weight 10-25kg. e.g. Border Collie, Staffie, Springer, Vizsla
NOT suitable for large breed dogs
Adult weight 25-45kg. e.g. Boxer, Labrador, Greyhound
NOT suitable for giant breed dogs
Adult weight 45kg+ e.g. Bernese, Great Dane, Mastiff

Dog ages

From 12 months to 7 years

Pack sizes

4kg & 15kg bags


15kg bags = £69.99

AADF rating


At a glance

Not natural: Contains some added artificial preservatives, antioxidants, colourings, flavourings and/or other controversial synthetic ingredients
Not high in meat: Contains less than 30% meat ingredients (on a dry matter basis) or meat percentage is unspecified
Not hypoallergenic: Contains wheat, maize, dairy products, soya products and/or artificial additives or has an ingredient list that is too unclear to rule out their presence
Not clearly labelled:

It is difficult to tell exactly what is in this food due to a lack of labelling clarity.

Certified nutritionally complete: This food complies fully with the complete food nutrient tolerances as recommended by FEDIAF and/or AAFCO

Price per day


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Mixing bowl:

Dehydrated Poultry Protein, Maize Flour, Maize, Wheat Flour, Animal Fats, Wheat, Hydrolysed Animal Proteins, Beet Pulp, Fish Oil, Minerals, Soya Oil, Yeasts and Parts Thereof, Hydrolysed Yeast (0.05%), Antioxidants.

As fed (BETA):

Nutritional additives (per kg)

Vitamin a: 12500 IU, Vitamin D3: 800 IU, E1 (Iron): 43 mg, E2 (Iodine): 4.3 mg, E4 (Copper): 13 mg, E5 (Manganese): 55 mg, E6 (Zinc): 133 mg, E8 (Selenium): 0.11 mg.

Technological additives

Preservatives - Antioxidants..

Typical Analysis

Protein 25.0%, Fat 14.0%, Fibre 1.3%, Ash 6.1%, Moisture 8.0%.


384.3 kcal/100g

Dry weight nutrients

Above average


Below average

* NFE carbohydrate level (i.e. not including fibre). Level estimated from available data.


15kg bags RRP


Grams per day


Cost per day


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Company info
Name: Crown Pet Foods Ltd
HQ: Somerset, UK
Parent company: Mars
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Manufacturer's product description

" natural DEFENCES

Helps support your dog's natural defences, thanks particularly to an antioxidant complex and manno-oligo-saccharides.


Helps promote optimal digestibility thanks to an exclusive formula including very high quality protein and a balanced supply of dietary fibre.


Enriched formula with omega-3 fatty acids (EPA-DHA) to help maintain healthy skin. "


26 Comments AADF Privacy Policy Sign in to comment
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toni pedley 2 years ago

Read the book forever dog. What is put in dry/wet dog food is beyond belief. Lawn fetilizer chemicals for one. By chapter 2 I was in the kitchen making fresh food for my dog and feeling awful that for the last 8 years I have been feeding her killer junk food. In the last few months her itching and dry skin is gone, she's full of energy and very alert. I will never feed her or any dog I own in the future "complete" dog food again.

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Stara toni pedley 2 months ago

Just check your own food toni if it has a lable on it don't eat it.Sugar feeds cancer.The only way to go is fresh food for a healthy life style.

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Steve Harvey 2 years ago

What's the point of this Web site if dog owners are not going to heed. AADF can't say it but it's clear in it's break down that it's over priced rubbish. There are hundreds of better more nutritious products on the shelves and cheaper. One of the RC doesn't even have any icon fulfilment! Why is it frequently found in vet surgeries? Well Mars throws a lot of money at vet colleges and expects a return. One of the 'vets' commenting states it's good if mixed with a high protein like beef..... it's supposed to be a complete food and stand alone, not a mixer. Even the cheapest Wagg is better and that's saying something.

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The D 2 years ago

All the idiots posting on this site about this food being awful are the same people that think the earth is flat. This food is great when combined with a diet of high protein food such as chicken or lean beef.

I am a vet of 30 years and can state with confidence that this is a great food for dogs.

If your dog gaings weight in this it's because you don't give the dog enough exercise and is probably in the same shape as the owner.

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Celtic dragon The D 2 years ago

Instead of "combining with high protein food such as chicken or beef ",, why not just feed a food with those components as its primary ingredients.

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JannieH The D one year ago

You would say that you're on good commission to sell it!! The word COMPLETE on dog food means you shouldn't be adding extra protein to you're dogs diet. Trading standards would be very interested in your comments.

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Jim POWERS The D 9 months ago

It says a complete dog food. Vet my back side

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Alison Byard 5 years ago

I had all five of my girls on this brand of dog food for roughly four years.
We have three sprockers, a goldie and a Boston.
By paying the price I did for this food and the fact it was recommended by a breeder friend, I thought I was giving them the best I could.
They were ok on this food but their coats were never thick and shinny like they used to be.
One of our girls had very loose stools and I could not make it right. The other girls were firmish but lots of it.
After trying and failing to cure Lola’s runny poos and reading reviews of how bad a choice this was, I decided to change their food.
Virtually straight away Lola’s motions started to become firm and less runny.
They seemed to be enjoying their meals and I noticed differences in their coats.
For the reviews and the reason just mentioned I won’t be using this brand again.
The brand is very over priced for what it is. I think because it is associated with the show ring they charge the higher amount for it.
Royal Canin also will not disclose the full ingredients and that makes me wonder why would you not?.
Would I recommend this brand - No
Is it over price in my opinion- Yes

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Jerry Polidano 7 years ago

Having the smallest breeds, Chihuahuas I find it okay, not my best choice, as I notice the teeth get ever so dirty, and also they love the food after it has been digested.
Any one recommends other small kibble that is easy to eat, as mini adult is easily for them to chew, other brands I have tried of round kibble just seem hard for them to eat. I have poms, and they will eat anything, much stronger dogs.

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Magsmfc Jerry Polidano one year ago

Hi Jerry,

I have only just seen your comment as I was looking at RC food for a friend. I personally think it has too many nasties and it is overpriced. I had a beautiful smooth coat chihuahua whom I sadly lost in November 2020. I fed her on Akela Wholeprey dry kibble in small paws size. The kibble is very small. Not only did Inca love it, she thrived on it. It only has nutritional ingredients in it. I hope this helps you or anyone else with a toy breed dog.

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rl11 9 years ago

I fed my spaniels the cocker royal canine for years and they always looked in great condition. After reading and researching all about high meat content and no grain being better, I have tried Canagan, Evolution and AAtu. Despite their quality ingredients, my dogs are not looking as healthy as they were and one is losing weight. I am going back to the royal canin cocker as they were visibly much healthier on that food compared to the more highly rated foods I mentioned above.

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Katie 9 years ago

This is RUBBISH. There are reasons for offering tailor made nutrition. For example the Dalmatian food is made for them as they are predisposed genetically to suffer from urinary problems. Anyone that has had a Dalmatian is aware of this. This food is almost a veterinary product it is so good and has had fantastic feedback. The Bulldog food to use another example - They as a breed have a brachycephalic jaw (flat face) this means they can find it difficult to pick up round shaped kibble. The Bulldog food has a specially designed wafer shaped kibble so that they can pick it up easier, taking in less air in the process, and thus reducing their flatulence. Again anyone that has had a Bulldog can confirm they can be windy!! So there is good reason for offering tailormade nutrition. And considering the millions they spend on research and development, i think they are in a better position to make our dogs food than we are!

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Kerry Katie 9 years ago

Hi Katie,
All this website does is break down the ingredient lists of dog foods, clearly explain what they are, and then rate the food based on this information. It's up to you decide what to do with this information and what to feed your dog.
But I have to say I wouldn't live off ready meals and expect to be the picture of health nor would I let McDonalds dictate what I feed my children because they are in the food industry and therefore must know better...

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Kerry Katie 9 years ago

Oh yes I forgot: 'almost a veterinary food'...um...based on what coz it ain't the ingredient list...

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JannieH Kerry one year ago

Vets get a good commission to sell it! .. thats the only reason they promote it.

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Laime Pilnīga JannieH one year ago

Totally agree. Royal Canin is just one big business venture. That's it.

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Shropshire Lass 10 years ago

If you check out this same product sold in the US you get a MUCH more revealing list of ingredients. I am sure that IF UK pet food manufacturers were required to list the actual ingredients like they are in the US, the appearance would be very similar to this.. this is my ingredient analysisROYAL CANIN MEDIUM ADULT DRY DOG FOODBREWER’S RICE, 1 Star – The small milled fragments of rice kernels that have been separated from the larger kernels of milled rice. Brewers rice is a processed rice product that is missing many of the nutrients contained in whole ground rice and brown rice, thus reducing the quality. Rice, especially with the germ and/or bran/hulls intact, has high levels of Oxalates and should be avoided in pets with renal/bladder issues. Can also be contaminated with potentially lethal Aflatoxins. Chinese rice products
have found to be contaminated with dangerous Melamine and Cyanuric Acid.CHICKEN BY-PRODUCT MEAL, 1 Star – contains rendered ground-up carcasses after all the muscle meat is removed, Can include internal organs including intestines, heads, beaks, feet, bones and undeveloped eggs, but only contains feathers that are unavoidable in the processing of the poultry parts. Concentrated. Will have high levels of Arsenic. Chicken by-product meal can vary in quality from batch to batch. Chicken by-product costs less than chicken muscle meat and lacks the digestibility of chicken muscle meatWHEAT, 2 Star - Indicates poor feed-grade quality, causes allergies and digestive upset. Not whole ground. Wheat, especially with the germ and/or bran/hulls intact, has high levels of Oxalates and should be avoided in pets with renal/bladder issuesCORN GLUTEN MEAL, 1 Star - Waste product, cheap, non-nutritive filler but used as protein source -- can cause allergies and sugar imbalance. Corn, especially with the germ and/or bran/hulls intact, has high levels of Oxalates and should be avoided in pets with renal/bladder issues. Can also be contaminated with potentially lethal Aflatoxins GMOOAT GROATS, 5 Star - Oats are very beneficial grains, groat simply has outer fibrous shell off.CHICKEN FAT, 4 Star - Good source of energy for dogs. Chicken fat is also a good source essential fatty acids.NATURAL FLAVORS, 3 Star - Standard flavor ingredient. Ask the manufacturer.DRIED BEET PULP, 1 Star - Waste product of the sugar beet industry. Cheap filler/fiber-causes sugar rush/addiction to food, hyperactivity and allergies. Beet Pulp has EXTREMELY high levels of Oxalates and should be avoided in pets with renal/bladder issues, particularly in the case of Calcium Oxalate stones! Sometimes added as a prebiotic but there are MUCH better prebiotics out there. Will also be GMO!FISH OIL, 1 Star - Non-descriptive type of fish oil can include rancid source of "throw away" catches.CALCIUM CARBONATE 3 Star - Standard source of
calcium, promotes strong bones, teeth, cardiovascular health and skeletal
strength, used as a buffer to acidic foods.GRAIN DISTILLERS DRIED YEAST, 4 Star - An inactivated, dried byproduct of the brewing industry. It can be a controversial item. This ingredient contains about 45% protein and is rich in other healthy nutrients including most of the Vitamin B. Brewer's yeast contains all the essential amino acids, 14 minerals and 17 vitamins. It is one of the best natural sources of the B Complex vitamins Thiamin, Riboflavin, Niacin, Pyridoxine, Pantothenic Acid, Biotin, and Folic Acid. It is also high in minerals, including Chromium, Zinc, Iron, Phosphorus and Selenium. Brewer's yeast is a good source of RNA, an immune-enhancing nucleic acid that may help in the prevention of degenerative diseases and slowing the aging process. Fans believe yeast repels fleas and supports the immune system. Critics argue yeast ingredients can be linked to allergies. This may be true, but (like all allergies) only if your particular dog is allergic to the yeast itselfVEGETABLE OIL, 1 Star - Non-descriptive source of fat, will probably be GMO Soy, Corn, Canola and/or Cottonseed!POTASSIUM CHLORIDE, 3 Star - Standard source of Potassium, balances acid/alkaline levels.MONOCALCIUM PHOSPHATE, 2 Star - Buffer, neutralizing agent in flours, poor source of phosphorous.SALT, 1 Star - Used to cover up rancid meat and fat, can cause kidney and heart disease, hypertensionHYDROLYZED YEAST, 2 Star – Yeast that’s been chemically broken-down into its
component amino acidsL-LYSINE, 3 Star - Source of Lysine (essential amino acid found in meat), needed to use for food enrichment for grain-based foods.STANDARD VITAMINS, 3 Star DL-alpha tocopherol (source of vitamin E), L-ascorbyl-2-polyphosphate (source of vitamin C), biotin, D-calcium pantothenate, vitamin A acetate, niacin, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, choline chloride, riboflavin (vitamin B2), folic acid, vitamin D3 supplementSTANDARD MINERALS, 3 Star – Sulfates/Oxides are poorly absorbed and metabolised. Proetienates are a lot more expensive but much better - zinc proteinate, zinc oxide, ferrous
sulfate, manganese proteinate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinateROSEMARY EXTRACT, 5 Star - natural preservative, concentrated.

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Dyanna Hall 10 years ago

I totally agree with previous comment. I fed my 5 1/2 year old Hungarian Vizsla on RC thinking it was a premium food and as it was used as prizes at Shows thought it was right for Vizslas. The result has been years of my dog having intermittent vomiting and diarrhoea. Numerous visits to vet and tests for various possible ailments. I finally realised the problem was happening each time I opened a new bag of this stuff. Apparently you have to feed as if you are introducing a different food ie the 75%/25% change over rule. That tells me you can't be sure whats in it. I now feed home cooked food and Burns. My boy looks better and is much happier. Many thanks to this web site which helped me a lot.

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Kirkbridgend 11 years ago

My dog had terrible bad wind and digesting problems on Royal Canin. His wind was bad enough that it could clear a room of dog lovers! Since changing to Natural Instinct he has not had bad wind and his general health and coat etc have improved.

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bubbleish 11 years ago

I have my own experience of Royal Canin and was very much not impressed and will never go near the stuff or anything grain based ever again. You just have to take one look at the list of ingredients to know it is a really badly put together complete food and yet at a premium price. It has everything that a dog food shouldn't have in it, MARS are making a killing on filling the shelves with unnecessary SKU's, and a sickening profit to boot at the expense of your dogs long term health. I hope this review by which dog food will help 'new to be' dog owners make a more informed decision on the right dog food to feed your dog and this is most definitely not one of them!

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LeBart 11 years ago

I think that people give ratings not after their own experience but after some biased things they read on the internet. For example, Royal Canin is the second best dog food I've ever bought, and after 22 years of experience with dogs, it means something. Medium Adult is an excellent dog food.

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rl11 LeBart 8 years ago

Totally agree. It seems to me that there is a vendetta out on Royal Canin for no good reason other than the ingredient list. I agree it's not spelt out as clearly as some of the newer products on the market but that does not make it bad. What does "very much not impressed" actually mean? I am actually very impressed that my 8 year old cocker is still taken for a 1 year old because she has such a fantastic coat. Apart from a few unsuccessful ventures into high meat products (Canagan, AAtu and Evolution) she has been fed almost exclusively on Royal Canin Cocker - Junior and Adult - and she is super healthy. People need to stop putting down Royal Canin unless they have actual factual examples of why it didn't work for their dogs, as opposed to "this stuff is rubbish because the ingredients don't sound very good to me".

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Elaine Daniels rl11 6 years ago

I wish I had never found all the negative things said about RC. My 1 year old French bulldog was doing great on the sensitive. Then after reading all the comments swapped him onto Simpsons. He seemed fine at first but now is turning his nose up at it, but will eat the RC that I still had left over. I'm more confused than ever! Also it did nothing to help with the wind as they claim it would do,if anything the smells were worse.

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IanB Elaine Daniels 5 years ago

I really don’t think we should pay any attention to whether dogs enjoy eating it or not. Firstly, manufacturers of poor food make it more appetising by spray coating the pellets with animal fats; whether a dog likes the smell isn’t a good indication of whether what is inside is nutritious. And secondly, it doesn’t work for people - plenty of unhealthy choices taste good! So why should it work for dogs?

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