Granofen is a wide spectrum wormer treatment for dogs. The anthelmintic treatment kills all types of gastrointestinal worms in dogs such as lungworms, roundworms, and certain breeds of tapeworms. Moreover, it also prevents further worm infestation. The product comes in granule form, which makes it easy to administer. The treatment can be repeated on the re-occurrence of the infection. The main ingredient in Granofen is Fenbendazole which controls, treats, and prevents intestinal worm infection in dogs. This product is one of the top selling worming treatments for dogs.