Drontal cat xl worming tablets triple pack drontal is the only wormer to kill every type of intestinal worm commonly found in uk cats which is why vets prescribe it more often than all other wormers put together the unique combination of proven active ingredients in both of the drontal cat formulations enables it to tackle tapeworms roundworms and hookworms in fact every type of intestinal worm your cat could normally get in the uk there are about 8 different types of intestinal worm that