Ivercares

Fenbendazole

Fenbendazole is a medication that is formulated to treat various parasitic infections caused by hookworms, whipworms, strongyles, Cestodes (tapeworm), and other parasites like Giardia and certain protozoa. This antiparasitic medication belongs to benzimidazole class of drug. It is specifically used in veterinary medicine to treat various worm infections in animals. Fenbendazole is a benzimidazole derivative with antiparasitic activity, which is distinguished by substitutions in positions 2 and 5 by (methoxycarbonyl) amino groups and phenylsulfanediyl groups. It is an anthelmintic of broad spectrum used in veterinary medicine to treat nematodal diseases and is an anti-nematodal medication.

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Key Features:

  • Chemical Structure: 1H-benzimidazole
  • Drug Class: Benzimidazole
  • Components: Carbamate ester and Aryl Sulfide are responsible for disrupting microtubule formation in parasites and ultimately leading to their death.
  • Uses: Mostly in veterinary medicines for worm infections.
  • Effective For: Can target against both larval and adult stages of parasites. 

How does Fenbendazole works?

Fenbendazole is an antiparasitic drug that acts by:

  • Preventing microtubule formation: Fenbendazole inhibits tubulin, a protein needed for microtubule formation, which interferes with cellular processes in parasites.
  • Disrupting glucose uptake: It inhibits glucose uptake, depriving parasites of energy and nutrients.
  • Injuring parasite cells: Fenbendazole induces cellular damage, eventually causing the death of the parasites.

Fenbendazole kills many parasites, such as:

  • Hookworms
  • Roundworms
  • Whipworms
  • Tapeworms

 It’s widely used in veterinary medicine and has also been investigated for possible use in human health. It’s not always approved for use in humans, and additional studies are required to know for certain about its effectiveness and safety in humans. Consult a healthcare professional for specific recommendations.

Uses

Fenbendazole is utilized for treating parasitic infestations in multiple animal species, including:

  • Companion animals: dogs, cats, and other companion animals
  • Livestock: cattle, sheep, goats, pigs, and horses
  • Poultry: chickens, turkeys, and other poultry. 

Fenbendazole comes in different forms, including: 

  • Tablets: oral tablets for dogs, cats, and other animals
  • Suspensions: liquid suspensions for oral use
  • Pastes: paste preparations for horses and other large animal species
  • Feed additives: medicated feeds for poultry and livestock 

Dosage

Fenbendazole dosage is based on the parasite type, animal species, and product formulation. Always use the recommended dosage and administration method as indicated by the manufacturer or veterinarian.

Interactions

Fenbendazole has the potential to interact with other drugs, including:

  • Anticoagulants (blood thinners)
  • Some antibiotics
  • Other antiparasitic drugs

Do not administer Fenbendazole along with other medications without consulting a veterinarian or healthcare provider.

Side Effects

Common side effects of Fenbendazole are usually mild and could include:

  • Gastrointestinal disturbance (vomiting, diarrhea, nausea)
  • Lack of appetite
  • Lethargy

Serious side effects but only rarely occur, particularly with long-term administration or in high doses. Inform a veterinarian or healthcare provider if any unusual signs appear.

Precautions

Pregnant and lactating animals

Animals with liver or kidney disease

Animals with known hypersensitivity to benzimidazoles 

Conclusion 

Fenbendazole is a potent antiparasitic drug used for the treatment of many parasitic infections in animals. But ensure to use it in the recommended dosage, check for side effects, and take advice from a veterinarian or medical professional. 

References 

https://pubmed.ncbi.nlm.nih.gov/30093705/ 

https://pubmed.ncbi.nlm.nih.gov/37998737/

Frequently Asked Questions (FAQ's)

1) What is Fenbendazole used for?

Fenbendazole is utilized to treat parasitic infections in animals such as hookworms, roundworms, whipworms, and tapeworms.

Fenbendazole isn’t always approved for use in humans, and its efficacy and safety in humans are currently under study.

Fenbendazole should only be used with care in pregnant animals, and only under the advice of a veterinarian.

Side effects are usually gastrointestinal upset, lethargy, and loss of appetite. Serious but uncommon side effects may present, particularly with high dosing or long-term use.

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