When used at regular doses, fenbendazole capsules are not likely to cause any side effects in pets. However, if your pet has a high parasite load (such as from giardia) or receives higher than regular doses of the medication, substances released by the dying parasites may cause an allergic reaction (facial swelling, itching, hives, rash, vomiting, diarrhea). If you notice any signs of an allergy to this medication, contact your veterinarian immediately.
Fenbendazole is a potent, broad spectrum anthelmintic medication that targets intestinal parasites, specifically the nematode class of worms. This medication is most commonly prescribed to treat and prevent nematode infections in dogs, but it can also be used off-label to protect against other parasites such as lungworms or giardia in dogs.
This medication is usually given orally, either as granules or as a liquid suspension that is mixed with canned food. It can also be compounded for your pet in tablet form at the direction of your veterinarian. It is a safe, effective, and highly beneficial medication that can be used to protect your pet from a variety of parasitic diseases.