Bladder stones can be very painful & may reoccur in the same dog after being dissolved. Prescription Diet™ Canine c/d™ helps to reduce the risk that struvite stones develop again in the same dogs. Key Benefits Helps reduce recurrence of struvite or calcium phosphate crystals & stones in the urine. Helps to neutralise free radicals as it contains high level of antioxidants. Please consult your vet for further information & guidance on what is best for your dog.