Purina Pro Plan Veterinary Diets UR Urinary St/Ox Feline Formula Dry Cat Food (6 lb. Bag)
Purina Pro Plan · 6 lb · Cat
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Overview
Key features
- Veterinary-exclusive therapeutic diet for urinary health management.
- Dual-action formula designed to help reduce the risk of both struvite and calcium oxalate crystals.
- Formulated to help dissolve existing pure struvite stones.
- Encourages increased water consumption to help dilute the urine.
- Provides complete and balanced nutrition for adult cats requiring this specific type of dietary support.
Pros
- Addresses the two most common types of urinary crystals in a single, targeted formula.
- Offers a nutritional strategy that may help avoid more invasive veterinary procedures.
- Backed by the extensive research and quality control of the Purina Pro Plan brand.
- A widely vet-recommended option for long-term management of specific feline urinary conditions.
Cons
- Requires a veterinarian's diagnosis and prescription to purchase.
- Carries a premium price tag, placing it at the very top of the market for its category.
- Its specialized nature makes it unsuitable for healthy cats or multi-cat homes with varied dietary needs.
- As with any specialized diet, some cats may be particular about the taste and texture.
Best for
This is a therapeutic diet intended for adult cats that have been specifically diagnosed by a veterinarian with conditions related to struvite and/or calcium oxalate crystal formation. It is not suitable for kittens, pregnant or nursing cats, or cats without a demonstrated need for this type of urinary support.
Feeding guide
Feeding a prescription diet like Purina's UR Urinary St/Ox formula demands close adherence to your veterinarian's specific recommendations for your cat's weight and condition. As a general starting point, an adult cat weighing 8-12 lbs may require approximately 1/2 to 3/4 cup of food per day, ideally split into two separate meals. This must be adjusted based on your cat's age, activity level, and body condition score. Always consult the official feeding chart on the bag and defer to your vet's instructions. Consistent access to fresh, clean water is essential to promote hydration and support the diet's urinary tract goals.
Ingredients & nutrition note
The ingredient profile of a therapeutic diet like Purina Pro Plan UR Urinary St/Ox is built for clinical efficacy, not necessarily to mirror the ingredient trends of standard cat foods. The formulation prioritizes a precise combination of nutrients, vitamins, and minerals that work together to manage urinary pH and mineral concentration. This means the composition is finely tuned to discourage crystal formation and support the dissolution of certain stones. The ingredients are selected based on extensive scientific research to achieve a specific nutritional outcome under veterinary supervision.
Price comparison
With a price of $9.00 per pound, this 6 lb. bag of Purina Pro Plan Veterinary Diets UR Urinary is positioned at the absolute highest end of the medium-bag dry cat food category. Its cost-per-pound matches the maximum price recorded among a sample of 120 products, placing it significantly above the category average of around $4.01 per pound. This substantial price difference is a direct reflection of its status as a therapeutic veterinary diet. The cost covers the specialized research, clinical trials, and precise formulation required to create a food that functions as a tool for managing a specific medical condition, rather than simply as a source of daily nutrition.
Frequently asked questions
Do I need a veterinarian's prescription to buy this Purina food?
Yes, absolutely. This is a therapeutic diet intended to manage specific health conditions. It should only be fed to a cat under the care and recommendation of a licensed veterinarian who has diagnosed the need for this specific formula.
What does 'UR Urinary St/Ox' actually stand for?
'UR' stands for Urinary. 'St/Ox' signifies that the formula is designed to be effective for managing both Struvite and calcium Oxalate crystals, the two most common types of urinary stones in cats.
Can I feed this to my other cats that don't have urinary issues?
No. This is a specialized diet formulated to create specific changes in a cat's urinary environment. It is not intended for healthy cats and should only be given to the cat for whom it was prescribed.
Why is this prescription cat food so much more expensive than regular cat food?
The higher price point is due to its nature as a therapeutic product. The cost includes the extensive scientific research, development, and clinical testing required to create a diet that provides targeted nutritional support for a specific medical issue. You are investing in a clinically proven formulation for your cat's health.
How long will my cat need to be on this food?
The duration depends entirely on your veterinarian's diagnosis and recommendation. For many cats with chronic urinary conditions, this may be a lifelong diet to effectively manage the issue long-term. Always follow your vet's guidance.
Is there a wet food version of this formula?
Yes, Purina often produces its veterinary diets in both wet and dry forms. A wet food version can be beneficial for increasing a cat's total water intake, which is crucial for urinary health. Check with your vet to see if incorporating the wet formula is a good choice for your cat.
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