Fenbendazole
Também conhecido como: Panacur, Safe-Guard, Granofen, Wormazole
> **Important:** In dogs, always give this medication **with food** to significantly improve its absorption and effectiveness. * **Multi-Day Dosing:** Unlike some single-dose dewormers, fenbendazole usually requires **3 to 5 consecutive days** of treatment to be effective. Do not skip doses. * **Safety:** It is very safe, but occasionally pets may experience mild vomiting, drooling, or diarrhea. * **What to Expect:** You may see dead worms in your pet's stool after treatment; this is normal. * **Giardia Treatment:** If treating for *Giardia*, ensure you also bathe your pet (especially the hindquarters) and thoroughly clean their environment to prevent reinfection.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
Veterinary professional? See the full dosing-by-species reference on VetSheet →
What it is used for
- For susceptible parasites
- CAMELIDS: For susceptible parasites in new world camelids
- CAMELIDS: For adjunctive treatment of meningeal worm infestation (Parelaphostrongylus tenius)
- For susceptible parasites
- For susceptible ascarids, hookworms, strongyloides, and tapeworms (Taenia spp. only)
- For Giardia
- For Giardia
- For lungworms (Aelurostrongylus abstrusus)
- For lungworms (Aelurostrongylus abstrusus)
- For lungworms (Aelurostrongylus abstrusus)
- For lungworms (Capillaria aerophilia)
- For lungworms (Capillaria aerophilia)
- For Capillaria feliscati
- For Capillaria feliscati
- For Paragonimus kellicotti
- For Paragonimus kellicotti
- For Eurytrema procyonis (pancreatic fluke)
- LARGE (EXOTIC) CATS: For labeled parasites
- For removal/control of Haemonchus contortus, Ostertagia ostertagi, Trichostrongylus axei, Bunostomum phlebotomum, Nematodirus helvetianus, Cooperia spp., Trichostrongylus colubriformis, Oesophagostomum radiatum, and Dictyocaulus vivaparus
- For removal/control of Haemonchus contortus, Ostertagia ostertagi, Trichostrongylus axei, Bunostomum phlebotomum, Nematodirus helvetianus, Cooperia spp., Trichostrongylus colubriformis, Oesophagostomum radiatum, and Dictyocaulus vivaparus
- For removal/control of Haemonchus contortus, Ostertagia ostertagi, Trichostrongylus axei, Bunostomum phlebotomum, Nematodirus helvetianus, Cooperia spp., Trichostrongylus colubriformis, Oesophagostomum radiatum, and Dictyocaulus vivaparus
- For Moniezia spp., and arrested 4th stage forms of Ostertagia ostertagi
- For giardiasis in calves
- For control of large and small strongyles, and pinworms in adult horses
- For foals and weanlings (less than 18 months of age) where ascarids are a common problem
- For control of encysted early 3rd stage, late 3rd stage and 4th stage cyathostome larvae and 4th stage Strongylus vulgaris larvae
- For treatment of migrating large strongyles
- For mucosal stage of small strongyles
- For Ascarids
- For flukes or microfilaria
- For Capillaria
- For nematodes, some trematodes
- Ratites: Has efficacy against ostrich tapeworm (Houttuynia struthionus)
- For susceptible parasites
- For whipworms in potbellied pigs
- For pinworms in mice, rats, hamsters, gerbils and rabbits
- For Giardia in Chinchillas
- Mice, Rats, Gerbils, Hamsters, Guinea pigs, Chinchillas
- BEARS (URSIDAE): For labeled parasites
- For susceptible ascarids, hookworms, whipworms, and tapeworms (Taenia spp. only)
- For susceptible ascarids, hookworms, whipworms, and tapeworms (Taenia spp. only)
- For Giardia
- To prevent transplacental and transmammary transmission of somatic T. canis and A. caninum
- For Capillaria plica
- For Capillaria plica
- For Capillaria aerophilia
- For Capillaria aerophilia
- For Filaroides hirthi
- For Filaroides hirthi
- For Paragonimus kellicotti
- For Paragonimus kellicotti
- For Paragonimus kellicotti
- For Crenosoma vulpis
- For Eucoleus boehmi
- For susceptible infections (most species)
How it is given
Possible side effects
- Hypersensitivity reactions (secondary to antigen release by dying parasites)
- Salivation (infrequent)
- Vomiting (infrequent)
- Diarrhea (infrequent)
- Pancytopenia (rarely reported in dogs)
- Bone marrow hypoplasia (rarely reported in dogs)
Cautions & contraindications
- Not FDA-approved for use in horses intended for food purposes
- > **Important:** Single doses are generally not effective in dogs and cats; treatment must continue for at least 3 consecutive days. * **Hypersensitivity:** Reactions may occur secondary to antigen release by dying parasites, particularly in animals with high parasite burdens. * **Food Animal Withdrawal:** Observe appropriate slaughter withdrawal times for cattle and swine based on the specific product used.
Drug interactions
- Bromsalan flukicides (dibromsalan, tribromsalan): Abortions in cattle and death in sheep have been reported after concurrent use
Perguntas frequentes
What is Fenbendazole used for in pets?
> Important: In dogs, always give this medication with food to significantly improve its absorption and effectiveness. • Multi-Day Dosing: Unlike some single-dose dewormers, fenbendazole usually requires 3 to 5 consecutive days of treatment to be effective. Do not skip doses. • Safety: It is very safe, but occasionally pets may experience mild vomiting, drooling, or diarrhea. • What to Expect: You may see dead worms in your pet's stool after treatment; this is normal. • Giardia Treatment: If treating for *Giardia*, ensure you also bathe your pet (especially the hindquarters) and thoroughly clean their environment to prevent reinfection.
Is Fenbendazole safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
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