Purina Pro Plan Veterinary Diet Feline UR Urinary St/Ox is a prescription wet cat food sold as 48 x 156g cans, formulated for adult cats prone to lower urinary tract conditions. It's designed for long-term dietary management under veterinary supervision for cats at risk of both struvite and calcium oxalate crystal formation.

The formula is made with high-quality ingredients and carefully balanced mineral content to help manage both types of urinary crystals common in cats. Feline Lower Urinary Tract Disease (FLUTD) is a broad term covering various conditions affecting the bladder and urethra, and diet is one of the most effective management tools available. The wet format is especially valuable for urinary patients because the added moisture dilutes urine and helps flush the urinary tract — a key component of prevention that dry-only diets can't replicate.

For cats with a history of urinary problems, moving to a wet prescription diet is often the single most impactful change an owner can make. The 48-can bulk format is practical for long-term feeding, and the targeted urinary support makes a measurable difference in reducing recurrence of crystal-related episodes.