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    Fenbendazole Q & A: Important Things to Know, Useful Tips

    6.8KViews Modified: Jul 5, 2025 · Published: Feb 15, 2025
    By Jacqueline 9 Comments

    857 shares
    • 852
    Fenbendazole Q & A: Things to Know, Useful Tips to Treat Cancer
    (Image source)

    Now that there is a little more awareness of fenbendazole, some are being proactive and self-treating their cancers in the interim period from diagnosis to first scheduled treatment. In many instances this period can span weeks or months making it an ideal opportunity to try something like fenbendazole.

    [I am resharing this because of its great importance and interest. Pls read to the end. Thanks to and excerpts from Fenben Can Cure Cancer.]

    Brian, a 40 yr-old man, was diagnosed with bladder cancer. He noticed some diffuse pain, reddish urine, went in to the doctor and he received a definitive diagnosis of early stage bladder cancer using serum, radiographic and biopsy techniques. Brian’s first radiation session was scheduled about a month later. His wife knew about fenbendazole, he took it (222 mg per day), his urine cleared up and he felt better. They were convinced that the cancer was gone so they asked for followup diagnostics. After some back and forth, they received updated testing. The cancer was gone.

    At the follow up visit the couple reported to the doctor that they used fenbendazole to eradicate the cancer. The doctor’s response was “No, that can’t be it, we must have misdiagnosed you in the first place.”

    Let that response sink in for a minute. The doctor’s response was to deny that Brian ever had cancer. But didn’t Brian show up to get irradiated for a bladder tumor that they had verified through corroborating methods? So either Brian was going to receive treatment for a cancer he didn’t have or the initial tests that he had to determine the type and location of his cancer were fraudulent. Either option is not good.

    If there is an effort underway to claim that fenbendazole is not an anticancer agent but is actually eradicating parasites that are misdiagnosed as “cancer,” then wouldn’t it behoove all those diagnosed with cancer to rule out the “parasite hypothesis” by self-treating with fenbendazole before starting an arduous, expensive and low probability of success traditional standard-of-care cancer treatment? Just a thought.

    Fenbendazole is so safe for veterinary consumption that it is sold by the 50-lb bag! The image below is from the 2011 film Bernie. The image is striking because seeing the many bags of Safe-Guard is reassuring regarding what must be, and is the extreme safety profile of fenbendazole. In other words, since fenbendazole is dumped into the feed of the animals with very little fretting over the exact dosage received, the standard dose of 222 mg fenbendazole (the amount used to deworm a 10-lb dog) used for cancer treatment is certainly at the lower end of any practical scale of toxicity! Also recall that the nation of India routinely deworms its population twice a year using a fenbendazole analog (albendazole).

    Fenbendazole Q & A: Things to Know, Useful Tips to Treat Cancer

    How is Fenbendazole Best Administered?

    Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. The most readily available is olive oil. Liu et al (2018) found that pairing mebendazole/febendazole with oleic acid (olive oil) greatly enhances the bioavailability of mebendazole. The magnitude of the effect was substantial, 1.6 to 2.8 times greater serum levels were obtained. Olive oil was the most effective, translating into more effective parasite killing effects.

    Administration of Fenbendazole

    To maximize the likelihood of ingested fenbendazole getting into the blood stream to kill distant cancer cells, helping absorption is wise. Whether you choose to take fenben with a fatty meal, mixed in a tablespoon of olive oil or both, these actions should deliver more bang for your buck. More of the fenbendazole survives digestive degradation to deliver more cancer killing punch.

    Fenbendazole Q & A: Things to Know, Useful Tips to Treat Cancer

    Others take fenbendazole mixed into a serving of yogurt or peanut butter.

    UPDATE: One chemist wrote in suggesting that fenben taken with a teaspoon of butter would have even more optimal absorption characteristics. She estimated that approximately 85% of the ingested fenbendazole would survive first-pass metabolism* en route to the target cells.

    Making sure it is actually absorbed can be a matter of life or death.

    Absorption Issues (Really an Insightful Test) with Fenben

    There was recently an instance of a husband with small cell lung cancer SCLC who had eradicated 90%+ of his tumors with fenbendazole but then he started to feel pain and diagnostic testing showed the tumors returning. We probed and found that, rather than his wife administering the fenben in yogurt as she did initially, when he started to feel better he self-administered his fenben by mixing it into his morning coffee. His wife was asked to run her finger along the inside of his coffee mug. Fenbendazole residue was coating the mug. He immediately switched to liquid fenben and within a week the pain subsided, and in 6 weeks his pain subsided, and all the lung tumors were gone. It is most likely that fenbendazole’s presence or absence is the critical factor in whether this cancer was present or absent.

    Fenbendazole Protocol for Cancer Prevention

    If you never get cancer after taking fenben it’s impossible to determine that fenben caused you not to get cancer. Having said that, some of the animal studies cited here DEFINITELY prove that fenbendazole PREVENTS cancer. In fact, the initial observation was that prior routine veterinary deworming treatment with fenben prevented the experimental brain tumor grafts from taking root and growing. This is literally the definition of prevention, see Bai et al., (2011) for example. Also recall that the nation of India, which routinely deworms its population twice a year using a fenbendazole analog (albendazole), has one-third the incidence of cancer as seen in the US.

    Regarding a protocol: Some healthy people, with no concerning risk factors do the following: once every 3 months we take 222 mg fenbendazole along with a tablespoon of olive oil for 3 consecutive days. A reasonable preventative protocol could be developed that took into account risk factors and weighed the aggressiveness of fenbendazole administration based on those risk factors. Because the safety profile is so great and the cost of fenbendazole is so low, and the cost of developing cancer is catastrophic, it may be wise to consider some sort of preventative program.

    A devil’s advocate might argue that, because it appears for all intents and purposes that fenbendazole can cure cancer, the rationale of preventing something that can be easily eradicated is somewhat of a fool’s errand.

    Whether the up-front preventative approach or the after-the-fact curative approach is adopted, it is nonetheless comforting and empowering to have a weapon like fenbendazole in your arsenal.

    Time-Course and Half-Life of Fenbendazole (and Mebendazole, the sister of fenben)

    Knowing how long a drug is active in the body is useful for a number of reasons, the most important of which is to help guide dosing. In a study measuring the disposition and time-course of mebendazole in the blood of healthy human volunteers, Conti et al., (2009) found that a single 1000 mg dose had an average half-life of 7.4 hours. According to Drugs.com, the half-life of a 500 mg dose of mebendazole varies between 3-6 hours.

    Using Conti et al.’s (2009) value of a 7.4 hr half-life in human subjects suggests that if multiple doses per day are used that spreading them out by 7 or so hours might be a reasonable strategy to maintain therapeutic blood levels of fenbendazole.

    Covid-19 Shots and Boosters, Cancer and Fenbendazole

    The recent phenomenon called “turboCancer” appears to be linked to covid shots and boosters. There are many other Substacks that present convincing evidence linking covid mRNA shots and boosters to the appearance of sudden, very aggressive, often fatal cancers in a variety of subgroups, most troubling in the 25-54 age group. These cancers, along with mRNA shot-induced cardiovascular injuries are reflected in the much higher death rates in most age groups since the pre-Covid-shot era in 2020. These deaths are also reflected in the greatly increased payouts of life insurance companies compared to the pre-Covid mRNA shot time-period (the increased deaths have nothing to do with the covid virus).

    This Substack was actually spawned by one of those turboCancer cases. Several of the Case Reports that are presented here are related to covid mRNA shots. Many of the cancer in the Case Reports that are in progress were caused by the mRNA shots according to the person making the report.

    So far, in the roughly one year time period that this Substack has been around, the only instances that we’re aware that fenbendazole was not effective (absent failure to take it) was when covid shots or boosters were administered after self-treatment began (and was showing positive results). Those instances described involved three separate cases of pancreatic, esophageal and renal cancer.

    If fenbendazole is kryptonite to the cancer cell, it appears that mRNA covid shots are kryptonite to fenbendazole’s effectiveness. Don’t know what the mechanism might be through. Most likely it is a generalized immune system exhaustion effect, p53 tumor suppression gene disruption or undiagnosed cardiovascular injury, blood clot, or stroke caused by the mRNA shots that masqueraded as a cancer death. Just theories.

    If you are self-treating cancer with fenbendazole, avoid future covid shots and boosters as if your life depended on it.

    Fenbendazole Q & A: Things to Know, Useful Tips to Treat Cancer

    Fenbendazole for humans – is it a good fit for human consumption?

    Although fenbendazole is ordinarily and originally used for the treatment of parasitic worms in animals, a report available at the European Medicine Agency states, “Fenbendazole seems to be well tolerated in humans after oral exposure (single oral dose up to 2,000 mg/per person: 500 mg/per person for 10 consecutive days)”. (Source)

    However, long exposure has not yet been scientifically documented. This most likely is due to the nature of the drug – the parasitic infections are usually eradicated in no longer than 1-2 weeks.

    Despite that, many people have taken fenbendazole daily for years as a prophylaxis to prevent cancer recurrence or as an active treatment against their tumors. The treatment appears to be safe and it rarely, if ever, causes any side-effects.

    Is Fenbendazole Safe for Pregnant or Nursing Mothers?

    Caution should be exercised when considering the use of fenbendazole during a period of heightened stem cell activity as would be present in pregnancy, especially in the first trimester. (source)

    Are There Any Interactions of Fenbendazole with Other Substances and/or Drugs?

    Cimetidine sold under the brand name Tagamet is mainly used in the treatment of heartburn and peptic ulcers. The search returns a few potentially minor interactions. “Cimetidine may decrease the hepatic metabolism of mebendazole, so serum levels of mebendazole may be increased. Since plasma levels of mebendazole vary greatly among patients receiving this drug, the clinical significance of this interaction is not well established.”

    Manufacturers of Fenbendazole: Does the Brand Matter?

    There are four main brands of fenbendazole that we are familiar with: Panacur-C and Safe-Guard Liquid for Goats both made by Merck in the US; and FenBen Powder or FenBenTablets from the Happy Healing Store North Carolina (unclear as to where the fenbendazole is manufactured). There are also a slew of Johnny-Come-Lately brands of fenben that have appeared for sale on Amazon since this Substack started. Until Case Reports come in specifically citing those new brands of fenbendazole we can’t comment on their effectiveness. The image below are the various brands that have been used successfully by readers of this Substack (the image in the upper right is the liquid form of fenbendazole).

    We can report that all of the products listed above have been identified as instrumental in eradicating various cancers in the various Case Reports presented here. As such that evidence would seem to argue that all the brands are equivalent in function.

    However, we specifically don’t recommend or endorse any brand because all that matters is that it works. And so far, they all appear to work. Use whatever you’re comfortable with, we have no evidence that the brand used matters.

    Just about everyone here will know of the Joe Tippins story. The thumbnail sketch is he had terminal metastatic small cell lung cancer, exhausted all traditional treatments and was given up for dead. He started taking fenbendazole (Panacur C), a dog de-wormer, the 1 gram packages his veterinarian recommended. Coincident with that Joe was enrolled in a clinical trial, along with 1099 others, to test the effects of an experimental drug on SCLC. Of the 1100 people in the study, one survived, that was Joe Tippens. Joe was the only one taking fenben and the rest is history.

    Crackle, Sizzle and Burn

    Several people have reported that when they self-administer fenbendazole they have some interesting sensations. One person, with SCLC that has subsequently resolved with fenbendazole, reported that he could “feel it working because there was a crackle and sizzling sensation” in his chest, where the cancers cells presumably were, when he took fenbendazole. Two separate instances of men with prostate cancer reported an irritation or an inflammation-like sensation in the general region of the prostate when taking fenbendazole.

    Another person self-treating for cancer reported a sensation of mild burning/irritation in both deltoid (shoulder) muscles that coincided with the locations of covid mRNA injections after taking fenbendazole.

    Whether these sensations are related to the main effects of fenbendazole (cancer eradication) or more in line with what might be better characterized as side-effects remains to be determined. All are very interesting, and as time passes hopefully we’ll get more reports like these from attentive readers that will help us understand what fenbendazole is doing.

    Thanks to and excerpts from Fenben Can Cure Cancer.

    There are now many cancer posts on this website. Search “cancer“, “fenben“, and “ivermectin“.

    ***For the Full Spike Protein Protocol to protect from transmission from the “V” and to help those who took the “V”, go here.

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    Hi! I’m Jacqueline!

    Thanks for being part of this journey with me.
    Welcome to my own little place on the internet! Home is where I love to be. I feel there is no greater place to incubate souls. These days you’ll find me using my experiences here to write about herbal remedies and natural health research — a big passion of mine. But being a wife and mother is not easy. It is challenging and potentially lonely. I get that. I wanted to create a place to connect with and support other moms for creating a natural, healthy, and fulfilling home life.
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    Reader Interactions

    Comments

    1. Abby

      February 16, 2025 at 5:39 pm

      Hi. What are your thoughts on all the parasite cleanses that are all over social media? Worth it? Just a fad? Which is best?

      Reply
      • Jacqueline

        February 17, 2025 at 11:52 am

        Hi, Abby, sorry for the delay!
        There as SO many parasite cleanses out there but they can be very harsh, cause gut irritation, and many just work on the gut and not the whole body, so I just stay with what is tried and true.
        We take TRS for maintenance detox (which includes undermining systemic parasites): https://deeprootsathome.com/heavy-metals-need-to-go-they-are-food-for-viruses-bacteria-fungi/
        Also clove water at night over months to keep the work supported (clove busts biofilms and so does TRS bc they are made of toxic metals): https://deeprootsathome.com/vast-benefits-of-cloves-possible-alternative-to-dental-anesthetics/
        And ivermectin (a pure antiparasitic) daily for several months every year: https://deeprootsathome.com/dirt-road-discussions-ivermectin-horse-paste-protocol-by-request/ REad the section on parasites and bad bacteria…
        With these lifestyle changes, they cannot survive.
        I hope this helps,
        Jacque

        Reply
    2. 12Question

      February 26, 2025 at 1:13 pm

      Maybe you could also put up a picture of Pancur Paste? It comes in a tube like Ivermectin paste, but it is a fatter tube and, unlike the clear goo which is Ivermectin Paste, it is more like a white cream, so it’s good for topical application. A person can do an application of the cream along with perhaps an application of DMSO as a transdermal carrier with it’s own healing properties. Sorry, but no research to back this up, but just maybe an interesting experiment. One could also do this as an addition to taking orally (systemically).

      Reply
      • Jacqueline

        February 26, 2025 at 1:30 pm

        Hi, 12Question,
        I do use DMSO to drive in IVM used topically. It works for people with toenail fungus and also with skin lesions. It is turning out to be a sound way to assist in absorption into tissues. It is totally safe in my opinion because my low kidney GFR (34%) went up to 44% (a very good thing) when taking DSMO orally as mentioned near the end of this post: https://deeprootsathome.com/dmso-could-help-millions-with-brain-and-spinal-injury-arthritis/
        Thanks for the comment,
        Jacque

        Reply
    3. Em

      March 05, 2025 at 5:40 pm

      Hi Jacque! For someone that has a lipoma, would you suggest doing the 222 mg for 3 days every 3 months or a more intensive schedule. Also do you know if taking capsules would work (not sure if the absorption would be good since they can’t be mixed into butter or oil or yogurt!)

      Also just wondering if you recommend any other zeolite detox? My kids have been on Coseva for about a year and it is just so prohibitively expensive. We can’t afford to continue it so I was thinking of trying one on Amazon. I know they probably aren’t as good but do you think better than nothing?

      Reply
      • Jacqueline

        March 05, 2025 at 9:10 pm

        Hi, Em,
        Im assuming you mean a benign lipoma (or maybe you mean lymphoma?). I would go to Dr. Wm Makis’s substack and see if he has any lipoma posts (search lipoma in his search bar). He is an oncologist and gives his recommendations appropriately for different problems including lymphomas. This would be a good post on lymphoma to start with and take you to his substack: https://deeprootsathome.com/large-b-cell-lymphoma-cancer-cleared-in-2-mo-w-mebendazole/

        I just checked and don’t see any posts on a simple, benign lipoma (fatty tumor).
        Here are some natural ways to possibly reduce one but it says you need to be consistent for a long time: https://www.emedihealth.com/skin-beauty/more-skin-conditions/remedies-manage-lipoma though I’ve never used it.
        I hope that helps,
        Jacque

        Reply
        • Em

          March 17, 2025 at 12:46 am

          Thanks for the response! I was hoping that using ivermectin/fenben might help with a lipoma (just a fatty non cancerous lump) but probably not!

          Also do you know if ivermectin/fenben could help with pandas flares? Because it seems that they are helpful to reduce inflammation. I am currently trying to figure out a way to treat a flare up without resorting to antibiotics (and on an extremely picky child who won’t take tinctures, etc.)

          Reply
    4. Gina

      March 15, 2025 at 1:21 pm

      Thank you for sharing all the information and research you do!

      My sister was recently diagnosed with leukemia. Have you come across any success stories in regard to healing that type of cancer?

      Thank you!

      Reply
      • Jacqueline

        March 16, 2025 at 5:03 pm

        Hi, Gina,
        Yes, I just posted on this for leukemia: https://deeprootsathome.com/leukemia-appears-very-responsive-to-ivermectin-fenben-meben/
        Dr. Wm Makis (on his substack) will likely have more out on leukemia over the next weeks and months as he is working with thousands of patients as we type. He tries to share the very encouraging results as we are all on a huge learning curve right now..
        I hope this is helpful,
        Sending peace,
        Jacqueline

        Reply

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