Purina Pro Plan Veterinary Diets UR St/Ox Urinary Formula Dry Cat Food

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16-lb bag
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Formulated to support renal health, Purina Pro Plan Veterinary Diets UR Urinary ST/OX Feline Formula is uniquely balanced to promote increased urine volume and water intake while delivering the optimal nutrition that adult cats need. It offers dietary benefits that provide optimal nutrition while meeting your adult cat's special needs.

Key Benefits

  • Promotes increased urine volume
  • Optimal level of magnesium
  • Exceptional palatability

Note: Purina Pro Plan Veterinary Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to rx@chewy.com.

See all items by Purina Pro Plan Veterinary Diets

  • Item Number
  • Weight
    16.0 pounds
  • Brand
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food

Nutritional Info


  1. Corn Gluten Meal, Chicken, Poultry By-Product Meal, Brewers Rice, Oat Fiber, Wheat Gluten, Whole Grain Corn, Animal Fat Preserved with Mixed-Tocopherols (Form of Vitamin E), Salt, Animal Liver Flavor, Phosphoric Acid, Dried Egg Product, Calcium Carbonate, Potassium Chloride, Fish Oil, Choline Chloride, Taurine, Zinc Sulfate, Vitamin E Supplement, Ferrous Sulfate, Manganese Sulfate, Niacin, Vitamin A Supplement, Calcium Pantothenate, Thiamine Mononitrate, Copper Sulfate, Riboflavin Supplement, Vitamin B-12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D-3 Supplement, Calcium Iodate, Biotin, Menadione Sodium Bisulfite Complex (Source of Vitamin K Activity), Sodium Selenite.

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Customer Reviews

Rated 4.8 out of 5 by 110 reviewers.
Rated 5 out of 5 by This was eaten! Success! Neither the Hills or the Science Plan prescription dry foods were satisfactory for my two. My boy has been in and out of hospital with Struvite crystals and the food they gave me prescriptions for he didn't like and lost a lot of weight in the following weeks. As a big boy (Norwegian Forest Cat) thats a big deal. Then someone told me that Purina did a prescription food and as they were already on a Purina food I thought I'd try. He's regained the weight within a couple of weeks and is happily chomping, and so is his sister. Now, I haven't had him rechecked yet so I have no idea if this is having an effect on the crystals but so far he hasn't had a recurrance so thats positive. October 8, 2016
Rated 5 out of 5 by Products are great so far My cat loves both wet & dry Purina prescription food for uti and bladder stones which we are trying to prevent from recurring. He has always been a picky eater, so I am happy he likes the food. October 8, 2016
Rated 5 out of 5 by What a time and money saver! I have many cats and dogs that we have rescued over the years, some of whom need to be on a prescription diet. To get all my food and supplies I was going to 2 different vet's offices, PetSmart, and Wal-Mart and usually found that something I needed wasn't in stock and would need a 2nd trip. Of course, there was also the added frustration of finding my favorite products just weren't going to be stocked anymore. Chewy not only has pretty much everything I need in one location (including the things that aren't available locally anymore), and at the same or slightly lower price, but ships FREE 1-2 day shipping for orders over $49! I'm not having to wait a long time for my order, make multiple stops, etc. anymore. The simplicity of saving time and money has also reduced my stress! Love it! August 4, 2016
Rated 4 out of 5 by This product appeals to my cat My cat Lily has been eating the Purina Pro Plan Veterinary Diet UR St/Ox dry cat food since I ordered it from Chewy.com. She seems to like the taste, although she still prefers wet food to dry food. I supplement her wet food with the Purina Pro Plan Veterinary dry cat food, and she does eat some of it every day. I would recommend this dry cat food, especially for those who have cats that like having both wet and dry food in their diets. September 5, 2016
Rated 5 out of 5 by Great way to get my kitty's prescription food This is a review of Chewy, not the food, as the food is prescribed, I haven't tasted it, but my weird cat loves it. I have been going to the vet's office for cat food for years. It's not the most convenient, but for prescription food, you have few options. Chewy had the best price I had seen on this food, better than amazon which says something to me, and they handled getting the info from my vet. The customer service and convenience made this a 5 start experience. August 23, 2016
Rated 5 out of 5 by This product is great for my cat with a sensitive urinary tract This is a great food for my rajah who survived a near death scare just over a year ago and has been eating this since with no further issues so far. His sister eats the same food because they both love the taste. August 24, 2016
Rated 5 out of 5 by My cats like it I bought this for Mocha who has had urinary crystals obstructions in the past that required hospitalization and $$$$. He really likes this(all the cats do) and will push the cover off the bowl to eat! I also feed him Purina Pro Focus for urinary health (no prescription needed) and make sure the water bowls are filled with fresh water. Have had no problems now for over a year & a-half. August 16, 2016
Rated 5 out of 5 by Satisfying It's nice and crunchy. Not sure if I like it better with regular milk, or soy milk. There should be some fun shapes. August 22, 2016
  • 2016-10-31 T06:56:50.767-05:00
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