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Continue to Canada siteRoyal Canin Urinary SO Moderate Calorie is a veterinary-exclusive dry cat food developed to nutritionally support your adult cat’s urinary tract and bladder health. This formula promotes a urinary environment unfavorable to the formation of both struvite and calcium oxalate crystals. It increases the amount of urine your cat produces to help dilute excess minerals that can cause crystals and stones. Moderate calorie content helps them maintain a healthy weight. Relative Super Saturation (RSS) methodology is used to help lower ion concentration in urine, which contributes to stone formation. Lower urinary tract issues may be a recurring concern for some cats. Talk to your veterinarian about keeping your cat on this urinary cat food for long-term urinary support.
Item Number | 50638 |
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Weight | 6.6 pounds |
Lifestage | Adult |
Food Form | Dry Food |
Special Diet | Pea-Free, Veterinary Diet, With Grain |
This item needs authorization from your veterinarian. Simply provide your pet and vet clinic information at Checkout and we'll follow up with your veterinarian to confirm. If you have a copy of your authorization, you can expedite the process by uploading a scan or photo of it to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
Pets can be sensitive to sudden changes in their diets. For this reason, it is extremely important to follow a gradual transition plan to best support your pet's health and product effectiveness. Ask your Veterinarian about the best way to transition your pet to a new food.
Chicken By-Product Meal, Brewers Rice, Corn, Corn Gluten Meal, Powdered Cellulose, Wheat Gluten, Natural Flavors, Chicken Fat, Salt, Fish Oil, Potassium Chloride, Calcium Sulfate, Egg Product, Sodium Bisulfate, Vegetable Oil, Sodium Pyrophosphate, Dl-Methionine, Fructooligosaccharides, Monocalcium Phosphate, Choline Chloride, Vitamins [Dl-Alpha Tocopherol Acetate (Source Of Vitamin E), Niacin Supplement, Biotin, Riboflavin Supplement, D-Calcium Pantothenate, Pyridoxine Hydrochloride (Vitamin B6), Vitamin A Acetate, Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement], Taurine, Trace Minerals [Zinc Proteinate, Zinc Oxide, Manganese Proteinate, Ferrous Sulfate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite, Copper Proteinate], Marigold Extract (Tagetes Erecta L.), L-Carnitine, Rosemary Extract, Preserved With Mixed Tocopherols And Citric Acid.
3,277 kcal/kg, 275 kcal/cup
Crude Protein | 32.0% min |
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Crude Fat | 9.0% min |
Crude Fat | 13.0% max |
Crude Fiber | 9.3% max |
Moisture | 8.0% max |
Calcium | 1.4% max |
Phosphorus | 1.3% max |
Magnesium | 0.08% max |
Weight | Tendency to become Overweight (Cup) | Ideal Weight (Cup) |
---|---|---|
4.4 lbs | – | 3/8 |
5.5 lbs | – | 1/2 |
6.6 lbs | – | 5/8 |
7.7 lbs | – | 5/8 |
8.8 lbs | – | 3/4 |
9.9 lbs | – | 3/4 |
11.0 lbs | 5/8 | 7/8 |
13.2 lbs | 3/4 | 1 |
15.4 lbs | 7/8 | 1 |
17.6 lbs | 7/8 | 1 1/8 |
19.8 lbs | 1 | 1 1/4 |
22.0 lbs | 1 1/8 | 1 3/8 |
It is recommended that your cat be fed 2 - 4 equal portions of the diet per day.
Pets can be sensitive to sudden changes in their diets. For this reason, it is extremely important to follow a gradual transition plan to best support your pet's health and product effectiveness. It is recommended to follow at least a 7-day transition plan before exclusively feeding your pet a new food. Cats will often refuse mixed diets, so we recommend adding the new food to a separate bowl from the old food. Start by mixing 75% of your pet's current diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the current diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the current diet with 75% of the new diet. On Day 7, you can feed your pet the new food exclusively. Ask your Veterinarian about the best way to transition your pet to a new food.
Transition Day | Current Diet | New Diet |
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Days 1-2 | 75% | 25% |
Days 3-4 | 50% | 50% |
Days 5-6 | 25% | 75% |
Day 7 | 0% | 100% |
We offer competitive prices and free shipping on orders over $49. Plus, you'll save more if you sign up for automatic refills with Autoship at Checkout. Chewy experts are available 24/7 to answer any questions you have.
1.tSearch for the diet your veterinarian recommends and add it to your cart. You can purchase your veterinary diets along with any other items you need. 2.tAt Checkout, you'll be asked for your pet's name and veterinary clinic information so we can confirm that the item is authorized by your veterinarian. 3.tPlace your order and we'll take care of contacting your veterinarian. If you have a copy of your authorization, you can expedite the process by uploading a scan or photo of it to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
If your clinic needs more information from you or recommends a different diet, we'll let you know immediately.
Yes. If you have a paper copy of your veterinarian's authorization, you can upload a scan or photo to the Prescriptions section in your account or your order confirmation. You can also email it to vetdiet@chewy.com.
Can I use a veterinarian's authorization if it was written by a veterinarian out of state? Yes. We accept valid authorizations from anywhere in the United States, and U.S. territories such as Puerto Rico.
Veterinary diets are formulated with the precise ingredients and nutrients needed to address specific medical issues. Because these diets are formulated for medical issues, veterinary authorization is needed to advise you on the best way to give them to your pet and to monitor your pet's health while they are on the diet.
Yes, but we'll need them to contact us and provide the full name of the pet's owner after the order is placed. This is so the veterinary clinic can locate your pet's records when we contact them. Email us at vetdiet@chewy.com or call us 24/7 at 1-800-672-4399.
Yes. Your veterinarian will tell us when your authorization expires and how many refills you have before they'd like you to check back in with them.
Can I set up automatic refills? Yes. Sign up for Autoship at Checkout and select how often you need refills. We'll automatically ship your veterinary diets for as long as your authorization allows. If you run out of refills or your authorization expires, we'll automatically contact your veterinarian for a new authorization.
Email us at vetdiet@chewy.com, start a chat on Chewy.com, or call us anytime at 1-800-672-4399. We're here for you 24/7.
Your veterinarian is the expert on your cat’s health, so you should always consult with this trusted advisor to find the best urinary health solutions for your pet. Royal Canin works closely with veterinarians to develop cat formulas that help support urinary tract and bladder health.
Your veterinarian may recommend a Royal Canin Urinary cat food formula for your cat. These special formulations can:
This helps your cat urinate more often, which can help minimize time for stones to form.
RSS methodology predicts urine crystallization and is used to develop diets that reduce the risk of stone formation.
A precise mineral balance can also help prevent stones from forming.
Last-minute dietary changes can sometimes upset your pet's stomach. Set your Royal Canin pet food order to Autoship to keep feeding on track and avoid unwanted disruptions.
What sets Royal Canin apart is their close collaboration with veterinarians. Through these professional partnerships, they strive to learn everything they can about pet health, including how different formulas perform for different breeds, sizes, lifestyles and therapeutic conditions. Ongoing research and development allows Royal Canin to keep providing the precise nutrition cats need for a range of medical conditions.
Customer Rating | Rated 4.6884 out of 5 stars 1,056 | Rated 4.5808 out of 5 stars 2,376 | Rated 4.7008 out of 5 stars 254 | Rated 4.5761 out of 5 stars 309 | Rated 4.2794 out of 5 stars 68 |
Price Per Unit | $8.34/lbChewy Price | $7.80/lbChewy Price | $7.84/lbChewy Price | $7.80/lbChewy Price | $9.55/lbChewy Price |
Price | $54.99Chewy Price | $59.99Chewy Price | $68.99Chewy Price | $59.99Chewy Price | $41.99Chewy Price |
Autoship | $52.24Chewy Price | $56.99Chewy Price | $65.54Chewy Price | $56.99Chewy Price | $39.89Chewy Price |
Top Ingredients | Chicken By-Product Meal, Brewers Rice, Corn... | Chicken By-Product Meal, Brewers Rice, Corn... | Chicken By-Product Meal, Chicken Fat, Brown Rice... | Chicken By-Product Meal, Powdered Cellulose, Tapioca... | New: Corn, Brewers Rice, Wheat Gluten... |
Special Diet | Veterinary Diet, Pea-Free, With Grain | Veterinary Diet, Pea-Free, With Grain | Sensitive Digestion, Veterinary Diet, Pea-Free, With Grain | Veterinary Diet, Weight Control, Pea-Free, With Grain | Veterinary Diet, Pea-Free, With Grain |
Food Flavor | Poultry, Chicken | Poultry, Chicken | Poultry, Chicken | Poultry, Chicken | Poultry, Chicken |
Health Feature | Urinary Tract Health, Weight Management | Urinary Tract Health | Digestive Health, High-Energy | Weight Management | Hip & Joint Support, Senior Care |
Lifestage | Adult | Adult | Adult | Adult | Adult, Senior |
Food Form | Dry Food | Dry Food | Dry Food | Dry Food | Dry Food |
I adopted two kittens in June 2022, I noticed one was developing problems with urination at around 6 months of age. Edgar was urinating everywhere, and frequently. He didn't seem like he was in pain, but I noticed drops of blood in his urine. So Edgar went to the Veterinarian and had a clean urinalysis. So no UTI, but the Vet stated he has a metabolic disorder that causes him to be prone to bladder stones and a diet change was in order. We started him on the Royal Canin Veterinary Diet Adult Urinary SO kibble and Edgar loves it. In fact it is so yummy, that the other three cats try to steal a bite every chance they get! So Edgar now has a private dining area. He is now 18 months old and thriving. Bright beautiful green eyes, silky coat, healthy skin and growing in leaps and bounds. He is very active and is generally a happy and healthy guy now. This Cat Mom recommends Royal Canin food without hesitation.
My cat was diagnosed with FIC (feline idiopathic cystitis) early this year. It was so frustrating that multiple vets could not give us an answer to what was wrong. One of the vets suggested a special diet catered to cats with urinary problems. We tried one with no luck, then switched to this brand. She went from 2 outbreaks a month (consistently peeing blood, cringing in pain, peeing all over our apartment) to all of her symptoms completely halting in 2 weeks. This combined with a daily scoop of D Mannose has been what works for her. If your kitty is struggling with FIC, I’m sorry. I hope that this works for you like it did for my baby!
My boy Smaug has been suffering from bladder crystals for a little over a year now. He's been in and out of the vets office and has been cath'd multiple times. Poor guy has been through it! I had him on the science diet brand and he got so fat and he still had crystal problems. One of the vet techs told me about this brand so I figured I would give it a shot. Not only has he been crystal free for a few months now but he has lost weight! Yay! Yes, this stuff is so expensive but it is cheap compared to the vet bills! Never taking him off this stuff! Oh and I saw a question about whether this can be given to a cat that has not been diagnosed with crystals and the answer is Yes. I have another cat named Yoda and it was so tricky to try and feed them two different diets. I asked my vet and my vet said it is totally fine to give this to Yoda and definitely would not hurt. He has been on it and he is doing great! Loves it just as much as Smaug and has lost a little weight himself! Win win!!
My cat was diagnosed with crystals at 3 years old. I did research and immediately put him on Royal Canin Urinary SO. He is now 12 years old. He’s never had a crystal or blockage or discomfort (from what I can tell, and he would tell me) since being on this food. Yes, it’s super expensive, but you really do get what you pay for with this. My cat loves the taste and texture of his food. He’s basically obsessed with it. In 9 years of eating this food, he’s never grown tired of it. Maven-recommended.
I waited, curious to see if my finicky cat would accept this new food & much to my delight, he liked it! Being an indoor cat, he needed to watch his calories. This way he can have the bulk without porking up & still prevent the bladder crystals. A win, win for both of us.
My cat had been experiencing urinary issues or FIC (Feline Idiopathic Cystitis). She kept peeing in areas of our home that were not normal and did it in front of me too! My veterinarian finally said she needed to go on a special prescribed formula food and recommended Royal Canin Urinary SO. It has helped tremendously with urinary inflammations and her random peeing episodes. Highly recommend this formula food for cats experiencing the same issues and has a great flavor that most cats enjoy.
Red Man has been fed the Royal Canin Veterinary Diet Adult Urinary SO Moderate Calorie Dry Cat Food for most of his young 10 years. Red Man and Bailey Boy are brothers, and all my inside cats get Royal Canin Veterinary Diet Adult Urinary SO Moderate Calorie Dry Cat Food. My inside cats are Willie, Half Pint, Ido, Happy, and Springer. I have 22 outside cats in a heavenly Cat Sanctuary. They are all from the same feral colony.
First off, he likes it and crunches happily away. He’s lost a couple of needed pounds while eating both this and the canned food. Cons: Simon is a long-haired half Maine Coon cat. This food does not address spring shedding and he’s thrown up hairballs and gastric juice everywhere! It took an occasional commercial can of primavera cat food and a tray of cat grass before it stopped. The *very biggest* con to this(aside from price, that is) is Chewy’s supply issues. Only a 17pound bag of this to see right now? Really? A credit card # that’s not working? Really? I used and saved the new one at the first auto ship 6 weeks ago! An email(yes, there’s one attached to my account)would have been nice telling me my order had been cancelled. Nope. Now I’m scrambling to get my cat his p/d before I run out. CHEWY, YOU’VE LOST A GOOD CUSTOMER. I’ll get my cats p/d locally, thank you.
The price increase over the last 2 years on this product is ridiculous! My cats don’t mind the food but I’m tired of this price gauging. I will be incorporating another food to blend in.