Fenbendazole

Fenbendazole is a broad-spectrum anthelmintic belonging to the group of benzimidazole carbamates applied for the control of mature and developing immature forms of nematodes (gastrointestinal roundworms and lungworms) and cestodes (tapeworms).

Fenbendazole can be used for prophylaxis and treatment of gastrointestinal and respiratory worm infections and cestodes in calves, cattle, goats, sheep, and swine, such as gastrointestinal roundworms including Bunostomum, Cooperia, Haemonchus, Nematodirus, Oesophagostomum, Ostertagia, Strongyloides, Trichuris and Trichostrongylus spp. and Lungworms including Dictyocaulus viviparus.

How this Medication Fenbendazole is Used for?

Fenbendazole (often abbreviated FBZ) is used in both large and small animals. In dogs, it is useful against roundworms, hookworms, and the more difficult to treat whipworms. It is effective against the Taenia species of tapeworm but not against the common tapeworm, Dipylidium caninum. It is also effective against Giardia (an intestinal protozoan that causes diarrhea) as well as several species of lungworm and even some flukes.

When a pet has chronic diarrhea and a cause cannot be found through testing, it is common to give fenbendazole for several days in a row as a general broad spectrum dewormer; the idea is that most parasites of significance will be removed by it even if they escaped detection in testing.

Side Effects For this Medication?

Some animals vomit or have nausea after deworming.

What are the Interactions with other Drugs?

There are no significant drug interactions in small animal use.

What are the Concerns & Cautions?

Treatment is necessary for 3-5 consecutive days for most parasites. Treatment may require a second course depending on which parasite is being treated.

Give fenbendazole with food for best absorption into the body.