It can be unsettling to hear that your dog has worms. Luckily, fenbendazole is a safe medication that can be given to your furry friend to help rid their bodies of those pesky parasites.

What is Fenbendazole?

Fenbendazole (brand names Panacur®, Safe-Guard®) is a medication used to treat parasites and worms (roundworms, hookworms, whipworms, and some tapeworms) in animals. Fenbendazole is a benzimidazole, a class of microtubule-destabilizing agents. Other benzimidazoles, including albendazole, parbendazole, mebendazole and flubendazole.



According to the American Kennel Club, “fenbendazole kills parasites by binding to tubulin (a type of protein), which interferes with the parasites’ ability to form microtubules, which combine to form the structure of the worm cells.”

How is Fenbendazole taken?

Fenbendazole is recommended for healthy dogs ages six weeks and older and comes in oral granules or as a liquid suspension. If using the liquid form, it is important to measure the dosage carefully.

fenbendazole dog food Fenbendazole for dogs is generally given once daily for 3 consecutive days and then again in another round 2-3 weeks later. You should not skip doses, and the full recommended dose should be given. Do not give more than one dose at once. For best absorption into the body, give your dog its fenbendazole with food.

You should store your fenbendazole in a tightly closed container at room temperature.

Fenbendazole Side Effects

Side effects of fenbendazole for dogs is rare. However, some dogs may experience gastrointestinal problems such as upset stomach, vomiting and diarrhea. Increased salivation is also possible.

Certain fenbendazole formulations, like Panacur Plus, contain other medications, such as ivermectin and praziquantel, which may produce more severe side effects. Be sure to talk to your vet about which product they are prescribing for your dog and what potential side effects to look for.

Some dogs may experience an allergic reaction as the parasites die. If your dog shows signs of an allergic reaction (facial swelling, itchiness, hives, diarrhea, seizures, shock, etc.) contact your veterinarian immediately.

Fenbendazole Drug Interactions

There are no known significant drug interactions when using fenbendazole for dogs. However, it is always important to let your veterinarian know any other medications, vitamins, etc. that your dog may be taking.

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