ROYAL CANIN Feline Urinary SO 33 Dry (17.6 lb)

    ROYAL CANIN Feline Urinary SO 33 Dry (17.6 lb)

    SKU: 470718
    Regular Price: $81.99Sale Price: $64.59
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    Simply Wild Pet Food ROYAL CANIN Veterinary Diet feline URINARY SO 33 is designed specifically for cats. The URINARY SO 33 formula will ensure that the production of a urine undersaturated with struvite and with a level of calcium oxalate saturation at which spontaneous homogeneous crystallization will not occur. ROYAL CANIN Veterinary Diet feline URINARY SO 33 is for cats with or at risk of developing feline lower urinary tract disease.

    Dry format:
  • Dissolve pure struvite uroliths
  • Helps prevent the formation of struvite uroliths
  • Helps minimize the risk of formation of calcium oxalate
  • Helps minimize the risk of formation of brushite uroliths

  • Please Note:All food is shipped via ground delivery, only to the Contiguous (48) States. Please allow 7 to 10 days for your delivery to arrive. (More Info)

    Please Note: Royal Canin diets requires authorization. This product ships directly from Royal Canin and will arrive separately from other products ordered from EntirelyPets. This product will not be fulfilled until a copy of a valid authorization is faxed to 510-892-2930 or e-mailed to

    *Royal Canin foods cannot be returned for any reason in accordance with FDA regulations in the US. Please be sure that you are placing an order for the correct food. We cannot accept any returns on these foods.


    Ingredients: Chicken meal, rice, corn gluten meal, ground corn, chicken fat, natural flavors, cellulose powder, sodium chloride, dried brewers yeast, dried egg powder, potassium chloride, calcium sulfate, monosodium phosphate, choline chloride, calcium carbonate, taurine, DL-methionine, vitamins [DL-alpha-tocopherol (source of vitamin E), niacin, biotin, riboflavin (vitamin B2), D-calcium pantothenate, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, vitamin A acetate, vitamin D3 supplement, folic acid], trace minerals [zinc oxide, ferrous sulfate, copper sulfate, manganous oxide, sodium selenite, calcium iodate], preserved with natural mixed tocopherols, rosemary extract, and citric acid.

    ROYAL CANIN Veterinary Diet™ feline URINARY SO™IN GEL Can

    ROYAL CANIN Veterinary Diet™ feline URINARY SO 33™ is formulated to meet the nutritional levels established by the AAFCO Cat Food Nutrient Profiles for adult maintenance.

    Animal feeding tests using AAFCO procedures substantiate that ROYAL CANIN Veterinary Diet™ feline URINARY SO™ IN GEL provides complete and balanced nutrition for the maintenance of adult cats.

    The canned product contains 1211 kilocalories/kilogram or 200 kilocalories per can ME (metabolizable energy) on an as fed basis (calculated).

    Customer Reviews

    DISCLAIMER: The results described on the testimonials on this site, are the individual experiences and personal opinions of those who have purchased and used the products. These testimonials are not intended to make any claims that the products can be used to diagnose, treat, mitigate, cure or prevent any disease or medical condition.
    Click here to see all reviews
    ROYAL CANIN IVD by Trish04/17/2013

    The vet prescribed this cat food and it really helped my cat, Dobby. He is now back to his normal weight and feeling good again.

    My finicky cat loves this food by Phil from Orlando FL04/24/2012

    My cat Princess normally turns her nose up at the specialty food I buy her, which is a problem because she needs food for a cat prone to UTIs. But she loves the Royal Canin IVD Veterinary Diet Urinary SO dry food, so if she had thumbs she would give it four thumbs up.

    Best food ever by Lawnmoo from Washington state09/25/2013

    This food literally saved my cats life! He is 14 now and had had urine crystals when he was very young. I believe this food saved his life and has enabled him to life a long good life!

    reasonable price by max from NC06/19/2013

    product recommended by Vet--unfortunately 'free' shipping doesn't apply

    My cat likes it by catlover12/19/2013

    I was wary of whether my cat would like the taste of a veterinary diet, but fortunately he likes this one.

    great service by taz10/28/2011

    i thank you for your continuing service as i have 2 male cats , one which is a large cat at 30 lbs and not fat just large to the point he scares people but is extremly docile but has to have this food due to problems with urinary tract problems.without it. thank you very much

    Never recieved the shipment by CatsRUs07/27/2014

    I placed the order over a month ago and had to contact Entirely Pets 4 or 5 times. They just kept telling me it would ship for Royal Canin "pretty soon". I finally got a tracking number but when I just tried to track it, it shows that the number is invalid. And now I got an email asking me to review it. OK. The product is a fine product if you can get it.

    Low quality ingredients but effective by Elena from Nor cal02/05/2014

    I've been using this food for years for my old cat. He kept getting blocked with urinary crystals and he doesn't like canned food. This food has a high sodium content so which makes the cat want to drink more h20. He hasn't had any reoccurrences since I put him on it. I just wish the ingredients were a higher quality rather than all the fillers. He likes the taste. It's not exactly cheap but it certainly follows through with its promise of prevention. This food is a prescription and should be fed to cats with crystals/ urinary problems only.

    royal canin so by 8catlady from Bountiful, Utah09/27/2013

    I have 8 cats. It is difficult to feed one cat a special diet. I was so worried when one cat had extensive surgery for urinary blockages. His surgeon told us to feed him SO. It's actually affordable from Entirely Pets. I decided to feed it to them all. Most specialty diets are not interesting to cats but to my surprise, they all love it. Please don't stop selling it!

    Has saved my kitty by Stephanie11/24/2009

    My cat had multiple episodes of bladder stones last year that nearly killed him. After thousands of dollars in vet bills, the vet expected that he would continue to have these problems and recommended some pretty radical surgical options. The vet suggested this food as a last ditch effort. Knock on wood-we haven't had a single problem in a years time on this diet (no extra snacks on the side). It doesn't smell great and gives the cat similar breath, but he is happy and healthy now, and of course, that's all I care about.

    Worth the price by Heather08/20/2008

    This food works perfectly. It has saved me hundreds of dollars in vet bills and has saved my cats a lot of pain! Urinary problems in cats can be potentially life threatening and since I started using this food we've had no problems! I have tried other brands and they don't work anywhere near this well and my cats LOVE the taste.

    So far, so great! by RoxnRaz from Florida10/02/2014

    My 9 year old cat recently began having urinary issues, the first time on Sept. 24th, in which I was able to keep him comfortable at home and help him with some research prior to getting him to the E-Vet. He was miserable when it first started... thank god for the research and home remedies... otherwise there was a good chance this instance would have taken him, he was in so much pain. This visit was our discovery of the bladder crystals, though it seemed minimal. He was much better by the time we had gotten to the vet (as I was working with a local resource to get some financial help for him). He blocked again, about 2 weeks later.... though the onset began about a week after the first, this one not as bad. I didn't wait. He went back to the vet, when he came home from the vet, he began shedding chunks of blood, it was terrifying.... so back to the vet. After keeping him for about 4 days, they switched him over to this diet vs. the CD rx diet that was initially suggested. This time they confirmed the crystals as struvite, but it was becoming a sludge.. Once he came home, I mixed this with water for him, and I have not had an issue since.... no signs of relapse, certainly no blood covered bathroom. He is happy, and urinating nice, clear diluted urine. This diet is a miracle, it it weren't for this food, my poor buddy would not have made it. We are both extremely grateful to have an option that works, for his urinary tract and taste-buds :) Highly recommended for cats with reoccurring FLUTD.

    Great product by shabrit11/19/2011

    Two of my cats have urinary issues. This food works wonderfully.

    Great Food by Izzie08/05/2014

    If not for this diet,, I know my sweet Blue would not have survived... once on this diet ,, which he eats happily,, everything improved with his health,, gonna be 10 years old and doing WONDERFUL,, Thank you~~Entirely Pets

    Royal Canin Feline SO by KWill800 from Venice, Florida12/03/2011

    Best dry catfood for cats with urinary problems

    Keeps them Happy by MRam01/25/2013

    My boys r always happy to get there meal and the Royal Canin Urinary cat food keeps them both happy and healthy. Excellent!!

    Good Price by bdee11/06/2012

    We like this food, and this is the best price we've found!

    Good prevention for our urinary problem cats by Snoop07/20/2013

    We have English short hair cats that are prone to urinary tract issues. Never had a problem with them and have been using Urinary SO for years.

    Great product by Tree from Luxemburg, Wi06/26/2013

    Excellent food for my older cat with a history of urinary infections. Would much rather preventive special cat food than weekend emergency vet visits. Plus the added stress on him was harmful to him. He also prefers this over other cat foods when both are put out.

    Cat urinary formula by Philip from south daytona, FL01/05/2013

    Excellent product. cats seem to like and no reoccurences of urinary issues

    Exactly what I needed! by Lyudmila from Brooklyn, NY02/15/2012

    Excellent, Can't ask for more. This is exactly what my vet prescribed for Nika. She is happy and I am happy! Thank you! P.S. it is a bit cheaper than I was buying from my vet!

    Great food by Rae from Colorado04/12/2013

    Our baby has a very sensitive stomach and we tried everything, even science diet but this was the only food that kept her belly calm.

    works great by sl from PA08/21/2013

    My cat was scheduled for surgery due to urinary tract blockage. After using Royal Canin IVD for three weeks the surgery was cancelled and my cat is feeling just fine. It is now about 9 months hence.

    by from 04/19/2011

    Shipping is not free for pet food. The shipping, if the price is above 85.00, it is less. However, it is not calculated in the online invoice order. You need to check the table for shipping cost( check shipping page ) and then call them to correct this charges appropriately.

    and by they from changedI


    Cat food by Andy from Wakefield, MA07/24/2013

    I had a cat that had kidney issues diagnosed at age 12 that I put on a special food for that problem & she lived until 19. My current cat had many urinary tract infections and bladder stone surgery before age 2. I put her on Royal Canin Feline Urinary SO 33 Dry Formula and she has not had a problem since & she is 5.

    by from 07/02/2013

    Our cats love this food!!! (Even the male). We are the guardian for three felines. My particular kitty started developing urinary tract infections.

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    Excellent product by Graycats from Florida10/23/2012

    My vet recommended this food after one of my cats had a UTI. That was a few years ago now and I continue to use this food for all my cats. They love it and it keeps them healthy. It's a little more costly than some cat foods, but when you consider your pet's health, I'd rather be safe than sorry. I'm on auto-delivery with EntirelyPets and have had great service. I'd recommend them highly.

    A must by Dolly from East Northport,NY11/03/2013

    One of my cats is prone to kidney stones, so my Vet recommended Royal Canin SO for her. Since I have multiple cats, it is not feasible to have different dishes, with different food, as she would eat that. So all my cats are on the Royal Canin. All three of them love it, and if I should run out of it for whatever, reason, and I give them something else, they won't eat it. I was on auto delivery, but it ended up to be too often. So, I order it online as needed. It always arrives in a timely manner and I have never had a problem with the food, or its delivery.

    My Cats Like This Food by SLW from Los Angeles, CA09/05/2014

    My vet recommended these kibbles for one of my cats, and fortunately it has helped lower his calcium level. I'm happy that all my cats enjoy eating this because frequently cats do not like food that is recommended for health reasons.

    Excellent diet for cat with kidney issues by KF01/18/2012

    My cat (who had surgery for urinary blockage) has been on this diet for two years without problems. He has a shiny coat, good energy, and eats this food without complaint.

    fast shipping by Grand from Richmond, BC11/15/2012

    my cat has diarrhoea problem, my vet gave him medicine and probiotic and it got a little improvement. my friend told me her cat has the same problem n her vet suggested this product n it works well. so i try, not even finish the first bag i can see the difference, good product!

    Urinary SO Royal Canin by Nancy from Clinton, MD04/01/2013

    It is good that one can order this product online if your cat has to eat this food for its urinary problems. It is a better price and you can get it sent directly to your house, saving you a trip to the vet. My vet is far away so it is wonderful to be able to get this shipped to my home.

    by catherine from Ocean View, DE12/01/2011

    customer service is terrible. Have been waiting 2 weeks for product. Have not received anything...can not get in touch with customer service either via chat or phone!


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