Pro Plan Veterinary Diets Purina UR Urinary Ox/St Canine Formula Dog Food Dry Kibble
- Veterinary Diet
- More reviewed than 64%
A vet-directed urinary formula best bought with a diagnosis in hand, not chosen cold off the shelf.
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How it ranks among the 50 veterinary diets we track
4.6★ across 453 Amazon ratings, Bayesian-smoothed toward the category average.
453 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
400+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 50 veterinary diets we track - how the scorecard works · full veterinary diets data report. Confidence: limited - incomplete product information.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Pro Plan Veterinary Diets UR Urinary Ox/St is a dry kibble formula from Purina designed to help manage a dog's urinary tract environment by targeting oxalate and struvite stone formation. It ships in a 25 lb bag, sized for extended feeding rather than a trial-size purchase.
Because it sits in the Veterinary Diets category, this formula is intended to be paired with a vet's diagnosis rather than picked off the shelf for a healthy dog. No ingredient list or feeding chart was provided with this listing, so specifics beyond the formula name come from the bag itself.
- Purina Pro Plan Veterinary Diets line
- Ox/St urinary formula
- Dry kibble format
- 25 lb bag size
Who it's for
Suited to owners who have already been told by a vet that their dog needs oxalate and struvite urinary management, and who want the 25 lb size for a multi-dog household or a longer feeding stretch. Not a fit for owners simply browsing for a general-purpose kibble.
Strengths and trade-offs
Drawn from this product's published specifications.
- Targets both oxalate and struvite stone risk
- Large 25 lb bag suits long-term feeding
- No feeding guidelines or ingredient list included in this listing's data
- Best used with veterinary guidance rather than on your own
Performance notes
Urinary support kibbles work by adjusting mineral content and urine pH to make it harder for oxalate and struvite crystals to form, but results depend on the individual dog and are usually confirmed through follow-up urinalysis with your vet.
Specifications
| Brand | Pro Plan Veterinary Diets |
|---|---|
| Model | 00038100175748 |
Other Pro Plan Veterinary Diets veterinary diets
How it compares
This product against the closest alternatives we track in veterinary diets.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Pro Plan Veterinary Diets Purina UR Urinary Ox/St Canine Formula Dog Food Dry KibbleThis product | 4.6 / 5 | 453 | 2.7 / 5 |
| Hill's Prescription Diet c/d Multicare Urinary Care Dry Dog FoodHill's | 4.7 / 5 | 2,200 | 4.4 / 5 |
| Royal Canin Veterinary Diet Canine Hepatic Adult Dry Dog FoodROYAL | 4.7 / 5 | 538 | 4.1 / 5 |
| Blue Buffalo Natural Veterinary Diet KS Kidney Support Dry Dog FoodBlue | 4.2 / 5 | 413 | 3.8 / 5 |
| Hill's Prescription Diet i/d Low Fat Digestive Care Dry Dog FoodHill's | 4.7 / 5 | 2,000 | 4.4 / 5 |
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Questions about the Pro Plan Veterinary Diets 00038100175748
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Do I need a prescription to buy Pro Plan UR Urinary Ox/St?
Veterinary diets like this one are typically sold without a prescription requirement online, but they're formulated for dogs under a vet's care and should be used based on a vet's recommendation.
What does Ox/St mean in the formula name?
It refers to oxalate and struvite, the two most common types of urinary crystals this formula is designed to help manage.
What size bag does this listing cover?
This listing is for the 25 lb bag.