Your cat may have worms if they are vomiting ... Some of the most common medications include pyrantel, pamoate, fenbendazole, and, for tapeworms, praziquantel. "It is best to have a fecal test ...

For example, praziquantel can begin killing tapeworms within 1 to 2 hours, though it may take a few days for you to stop seeing tapeworms in your cat’s feces. Fenbendazole, which is used off ...