Royal Canin Canine Urinary S/O Moderate Calorie 48x100gRoyal Canin Canine Urinary S O Moderate Calorie 48x100g ROYAL CANIN Urinary S O Moderate Calorie in Gravy is formulated especially for dogs with urinary health concerns and is available in boxes of 12x 100g pouches . ROYAL CANIN Urinary S O Moderate Calorie in Gravy helps to dissolve all types of struvite stones. Whats more, this specially tailored formula contains nutrients that reduce the likelihood of calcium oxalate stones or struvite stones