Royal Canin Urinary S/O Pouch 100g for Dogs Therapeutic Food Expiration Date: January 10, 2027 *Yu-Packet Post ◎ Urinary S/O for dogs is a specially formulated therapeutic food intended for dogs with lower urinary tract disease (struvite urolithiasis and calcium oxalate urolithiasis). This diet adjusts mineral components such as magnesium. It adjusts the nutritional balance of minerals, etc., to create slightly acidic urine that makes it difficult for struvite to form. It adjusts the nutritional balance of minerals, etc., to maintain a healthy urine volume that is not highly saturated with struvite and calcium oxalate in the urine. It adjusts the nutritional balance of minerals, etc., to maintain a healthy urine volume. It restricts the magnesium content, which is a component of struvite stones (magnesium ammonium phosphate).