Fenbendazole
Also known as: 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.
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
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
Frequently asked questions
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.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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