You are in Sweden? I am not sure what is available to you there. Most people here in the USA use Fenbendazole, it kills off nearly all internal worms except Tapeworms. You might take a poop sample into your vet and have it tested to see exactly what type of worm if at all, you are dealing with. The vet can then prescribe the proper dewormer if she has worms.I wow is that something I need to go to the vet for?