Virbac C.E.T. VEGGIEDENT Zen Tartar Control Chews for Dogs - Large3 WAY PERFORMANCE: Cleans teeth, freshens breath and supports proper digestion. INNOVATIVE SHAPE: Unique Z shape allows the chew to reach front to back and everywhere in between HEALTHY INGREDIENTS: Plant based, no animal derived ingredients, gluten free and easily digestible. GUT HEALTH SUPPORT: Contains a prebiotic known to support proper digestion and help maintain intestinal well being. FORMULATED WITH L THEANINE: which is also found in green tea