Panacur (fenbendazole) is a veterinary medication prescribed to treat and control hookworms, roundworms, Taenia Tapeworms and whipworms in dogs. The drug comes as a powder that is mixed into your dog’s food and works to break down the internal parasites by inhibiting their energy metabolism. It also damages their cell walls and prevents them from forming eggs.

Fenbendazole belongs to a group of drugs called benzimidazoles and is used to deworm both cats and dogs. It is not FDA approved for use in felines and kittens, but veterinarians can legally prescribe medications that are not listed on the drug label in certain circumstances. This is called extra-label usage and it is important to always follow the directions provided by your veterinarian.

In dogs, fenbendazole is used to treat hookworms (Helicobacterium caninum, Uncinaria stenocephala), roundworms (Ancylostoma caninum, Dipylidium caninum) and tapeworms (Taenia pisiformis). It is also used off-label to treat Giardia in dogs.

Each gram of the drug contains 250 mg of fenbendazole. In horses, fenbendazole is labeled for the removal of large strongyles (Strongylus edentatus, S equinus, S vulgaris), small strongyles (Cyathostomum spp, Cylicocyclus spp, Cylicostephanus spp, Triodontophorus spp) and pinworms (Oxyuris equi). It is also used to remove ascarids (Parascaris helvetianus) and trichuris (Trichuris suis).

This anthelmintic can be given in the form of oral granules or liquid suspension. It should be given by mouth and should be mixed into the animal’s food to reduce gastrointestinal upset. It is a fast-acting treatment and results can be seen within hours. fenbendazole powder