Prescription Diet™ t/d™ is formulated with the following benefits: Reduce the amount of bacteria laden plaque in the mouth to promote systemic health Clinically proven to reduce plaque, stain and tartar buildup Reduces bad breath Added antioxidants to control cell oxidation and promote a healthy immune system Awarded the Veterinary Oral Health Council (VOHC) Seal of Acceptance for helping reduce both plaque and tartar accumulation