Fenbendazole Side Effects in Humans: What You Need to Know

According to Wikipedia, Fenbendazole is a broad spectrum anthelmintic used against gastrointestinal parasites including: giardia, roundworms, hookworms, whipworms, the tapeworm genus Taenia (but not effective against Dipylidium caninum, a common dog tapeworm), pinworms, aelurostrongylus, paragonimiasis, strongyles, and strongyloides that can be administered to sheep, cattle, horses, fish, dogs, cats, rabbits, most reptiles, freshwater shrimp tanks as planaria and hydra treatments, as well as seals.

One such study found unexpected tumor growth inhibition in a group of mice treated with a combination of Fenbendazole and vitamins. As more studies emerge – some already published, some currently ongoing – a rapidly growing number of human patients are taking Fenbendazole to treat their cancer.

The Fenbendazole Cancer Protocol has been gaining rapid interest over the past years following some fenbendazole advanced cancer success stories.

Joe Tippens founded the protocol after he was told a story about a scientist at Merck Animal Health that had been performing cancer research on mice. The research included injecting different types of cancers into different mice body parts. The scientists discovered, through trial and error, a product in their canine product line, fenbendazole, that was batting 1.000 in killing these different cancers in the mice. The scientist was later diagnosed with stage 4 brain cancer and was given a grim prognosis of only three months to live. She decided to try the fenbendazole, and after six weeks, showed a clean scan.

Joe Tippens had been initially diagnosed with small cell lung cancer. The cancer later spread to his neck, right lung, stomach, liver, bladder, pancreas and tail bone. Like the scientist from Merk Animal Hospital, Joe was told he only had three months to live. In 2017, after hearing the story of the scientist who treated her cancer with a canine drug, Joe decided he was going to do the same. However, in addition to taking the fenbendazole, Joe added his own ingredients to the regimen (curcumin, CBD oil, and vitamin E), thus creating the Joe Tippens Cancer Protocol.

Disclaimer: We in no way endorse the Joe Tippens Cancer Protocol as a cure for cancer, and as always, you should consult your physician before starting any new medications or treatment plans.

What Is Fenbendazole?

Common brand names include Pancur, Panacur C and Safe-Guard.

However, it is also being used by humans in a cancer treatment method known as the Joe Tippens Protocol.

Is fenbendazole a cancer cure scam? One study suggests that fenbendazole has “been safely utilized as an anti-parasitic for various different animal species and could be repurposed for treating human malignancies.” Other benzimidazoles, including albendazole, parbendazole, mebendazole and flubendazole have already been shown to have promising results in humans

Another study states that the “repurposing of veterinary drugs showing promising results for human use can result in considerable time and cost reduction required to develop new drugs.”


Why cancer patients use Fenbendazole

Developing new drugs requires a lot of time, effort, and money, and generating a promising drug can take years. Fenbendazole is already an established drug showing promising results for human use with a very low level of toxicity. It has been shown to stabilize WT p53, provide moderate microtubule disruption, interfere with cancer cells’ glucose metabolism, and target cell cycle arrest. These factors have led to a decrease in cancer cells both in laboratory environments as well as in live subjects with minimal side effects and toxicity. In addition, Fenbendazole has been shown to kill cancerous cells and promote regression in cancer patients with large B-cell lymphoma that had metastasized, as well as other metastatic malignancies, bladder cancer, renal cell carcinoma, and more.

Panacur-C for Cancer


* Please take note that the Panacur C on Amazon is available in three sizes (1 gram, 2 grams and 4 grams) of single dose packets.

Fenbendazole side effects in humans 

Although safety data exists for various animals, the safety and tolerability of Fenbendazole in humans for sustained periods of time have not been thoroughly studied yet. Nevertheless, many patients have decided not to wait for the lengthy bureaucratic process of scientific data to be published; they are following the protocol at their own risk. Most of these people report taking Fenbendazole without any side effects.

According to a study available from the European Medicine Agency, doses up to 500 mg per person did not result in serious adverse effects. Moreover, single doses of up to 2,000 mg per person were reported to cause no serious adverse effects over the course of ten days.

According to the product description on Amazon, fenbendazole is "Safe for all Dogs 6 weeks and older, including pregnant Dogs".


Side Effects of Fenbendazole Reported: 

Most people have NO side effects. The main complaints of the small group of people who did experience side effects were: 

* Mild diarrhea

* Mild stomach discomfort

* Elevated liver enzymes


Who May Be At Greater Risk of Side Effects?:

  • People who use Fenbendazole in high doses.
  • Use of medications and supplements that use the same pathways for metabolism as Fenbendazole
  • Those taking treatments/medications that increase liver enzymes
  • One research suggests that those who are weak from chemotherapy may experience more side effects than those not receiving conventional cancer treatment, particularly in elevated liver enzymes.

This article is part of the cancer series.



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