The active ingredient of Frontpro Antiparasitic for Dogs 10-25 kg is Afoxolaner. Excipients: Maize starch, Fine particulate soya protein, Beef stew flavouring, Povidone (E1201), Macrogol 400, Macrogol 4000, Macrogol 15 hydroxystearate, Glycerol (E422) 6, Medium chain triglycerides.