All puppies are born with intestinal (gut) worms, and older dogs can pick them up at the park, so its important to treat them regularly to prevent sickness or worse, fatal intestinal blockage. To check if your pup has worms, look for a fat, round, belly; thin coat, and less playful behaviour. Its a good idea to give your dog worm treatments at two, four, six, eight, 10 and 12 weeks of age. Although roundworms are the most common worm in puppies, you can also give a broad-spectrum treatment, which also treats hookworms, whipworms and tapeworms. What does this tablet treat? All Wormer Tablets for Dogs from Aristopet are tablets for the treatment of all 11 common intestinal worms in dogs including: roundworm ( Toxocara canis, Toxascaris leonina ) hookworm ( Ancylostoma caninum, Ancylostoma braziliense, Unicinaria stenocephala ) whipworm ( Trichuris vulpis ) tapeworm ( Dipylidium caninum, Taenia ovis, Taenia hydatigena, Taenia pisiformis hydatid tapeworm, Echinococcus granulosus ). For the treatment of all common intestinal worms including Roundworm, Hookworm, Whipworm, Tapeworm and Hydatid Tapeworm. Please note - These tablets are for intestial worms and do not treat or control heartworm. To ensure effective worm control, treat all dogs in the household at the same time. Animals infested with worms are a continual source of reinfestation to other dogs. Signs of worm infestation in dogs are lack of energy, loss of weight, vomiting and diarrhoea. An important part of the worming program is flea control. Dogs are frequently infested by tapeworm ( Dipylidium caninum ) which uses the flea as a carrier. Available in the following pack sizes: 2-pack 4-pack 50-pack 100-pack Older puppies and adult dogs should be given this remedy every three months, or monthly, depending on what the product tells you!