Here at GJW Titmuss we offer a range of dog wormers by Drontal, Panacur, Plerion, Beaphar and Verm-x. It has been said that dogs in the UK could be infected with up to a 12 different types of intestinal worm. The trouble is that it is not always easy to spot the symptoms. Furthermore it is unfortunate that no tablet or injection will prevent worm infection. Therefore best you can do for your dog is to kill any worms, which may be present, on a regular basis. It is said that using dog wormers at least every 3 months will reduce this risk, but it is always advisable to contact your Vet at any signs of such problems.