Zukes Z Rdge Dental Chew Bone For Medium Dogs, 2.65-Ounce Bone (Pack Of 18) Ingredients: Potato Starch. Vegetable Glycerin. Nutmeg Powder. Fennel Seed Powder. Parsley. Cellulose Fiber. Natural Flavor. Whey. Vanilla Extract. Lecithin. Salt. Clove Powder.