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This Post Has 152 Comments

  1. Jeff

    Can Fenbendazole and Methylene Blue be taken together for cancer treatment? Any other concerns by combining? Thanks in advance

    1. fenbendazole

      Dear Jeff,
      Fenbendazole is generally regarded as safe and well-tolerated. It often shows compatibility with a wide range of medications, supplements, and standard cancer treatments such as chemotherapy, immunotherapy, and radiotherapy.
      However, there is no established scientific evidence regarding its use in combination with Methylene Blue, and their potential interactions are also unknown.
      Therefore, we recommend proceeding with caution if you decide to combine these two drugs. It is advisable to start with a lower dose than typically recommended. If the patient tolerates the treatment well, you may gradually increase the dosage to the levels outlined in the protocol.
      Additionally, it is important to closely monitor the patient’s overall health and conduct regular blood tests to ensure the treatment progresses safely and effectively.

  2. Susannah

    Can fenbendazole be used during targeted therapies, such as enhertu; herceptin, or car-t?

    1. fenbendazole

      Dear Susannah,
      Thank you for your question.
      Fenbendazole is generally considered safe and well-tolerated. However, it can interact with other medications, and not all potential interactions are known. Unfortunately, we couldn’t find specific data regarding interactions between Trastuzumab or CAR-T cell therapy and Fenbendazole.
      Both Trastuzumab and CAR-T cell therapy are not classified as chemotherapy, which suggests that they should not cause any adverse interactions with Fenbendazole. Nonetheless, we recommend that you have monthly blood tests and closely monitor your overall health.

  3. Marina

    Hello, I am diagnosed with the Uterus cancer, I am 64 of age.
    Is there a protocol on your site for FENBENDAZOLE+IVERMECTIN?
    I checked but I didn’t find it.
    Thanks.

    1. fenbendazole

      Hello Marina, We are a Fenbendazole information page. We are sorry, but you will not find information about the interaction of Ivermectin and Febendazole on our page.

  4. John

    8 years ago, I was diagnosed with prostate cancer. Gleason 6. I’ve had 4 biopsies since, the last one being two years ago. Still the same; 3 out of 15 showing 3+3 and my last psa was 1.9, before that it was 1.3. I was taking 222 mg 3 days per week, but recently switched to 444mg 3 days per week. What would be the proper protocol?

    1. fenbendazole

      Hello John,
      When determining the correct dosage and frequency of Fenbendazole for your body weight, please use our provided dose calculator:
      https://www.fenbendazole.org/fenbendazole-information/fenbendazole-dosage-guide/
      Also, do not forget to take supplements from the protocol, such as milk thistle, Curcumin, Vit D and others.
      Should you wish to increase either the dose or frequency, be careful not to surpass the maximum daily limit of 444mg. Moreover, if you are adjusting how often you take the medication or decreasing the break periods between doses, it is important to conduct regular blood tests, check your liver enzymes, and monitor your general health.

  5. Michael

    Hello! I have stage 4 gallbladder cancer and currently take 4.5ml – 444mg of Panacur 10 liquid. I was considering switching to FenBen Lab, but I’ve read concerns about its purity not being as high as advertised. Is the liquid form I’m using okay, and should I be concerned about switching? Thanks in advance for your advice.

    1. fenbendazole

      Hello, Michael. Thank you for your question!
      As a product of Merck that is regulated by the FDA and EMA (European Medicines Agency), Panacur is undoubtedly safe product. As an independent organization, Fenben Lab is not subject to regulation by the aforementioned institutions. However, they are not subject to their regulation, because they market it as a chemical substance – not a veterinary use product. Both appear to be reputable organizations with years of experience and positive reviews, as far as we are aware.
      Concerns regarding purity originated from a rival brand that conducted illegitimate independent testing; thus, this may be considered attack marketing, a practice that is occasionally regarded as unethical in the business world.

  6. Graeme Boucaut

    Should I stop taking Fenbendazole before having a MRI?

    1. fenbendazole

      Hello and thank you for a question, Graeme.
      You should stop at least 24h before MRI.

  7. Star

    My 47 y/o husband is currently inpatient at a hospital. He is not eating and drinking a lot. He is hooked up to fluids via iv. Is this enough hydration for me to be giving him 222mg fenben? He has stage IV melanoma. He is currently being treated with chemo pills 5 days every 28 days. I waited 2 days to start the fenben after the last chemo dose.

    1. fenbendazole

      Hello, Star. Thank you for a question.
      Yes, fluids administered via IV should be enough. It is really great, that you decided to make a short pause after Chemo. 222mg is a relatively safe dose and should not cause any adverse effects.

  8. Tony Talacko

    Hi My dog weighs 30 pounds. The calculator says he should get 680mg per dose, is that correct?
    Thank you,
    Tony

    1. fenbendazole

      Hello, Tony, thank you for a question.
      That is not correct. According to your dogs weight (30 pounds = 13 kilograms), he/she should take 222mg once a day for four days in a row. Then, for the next three days, do not give your pet fenbendazole. Repeat this cycle every week. Also consider supplements for your dogs liver health and check liver enzymes.

  9. Kimberly

    I have a few additional questions to add from my previous post. The video from Dr. Rogers at this site recommends 444mg of the Fenben if you are fighting cancer and 222mg for preventative whereas the protocol showing only 222mg based on my weight and with cancer. Also, he stated the Fenben and Artemisinn ok to take in addition to chemo but did not mention anything about stopping the Fenben protocol right before and after each session. Thank you

    1. fenbendazole

      Hello, Kimberly.
      444 mg is an acceptable dose in the majority of situations. Nevertheless, the video missed to provide any information regarding the patient’s weight. Should you observe no adverse effects while taking 222 mg, you are free to increase the dosage if you so choose. However, be sure to monitor your liver enzymes and consider the possibility of liver toxicity. While a dose of 444 mg is generally well tolerated, we advise you to at least begin with a dose that is correlated to your weight, which in your case is 222 mg.
      In response to your second question, you may pause during your chemotherapy round in order to maximize its benefits. Fenben does not cause harm when taken in conjunction with conventional treatment; however, it does diminish the efficacy of conventional treatment slightly.

  10. Kimberly

    I will be seeing my Oncologist on the 23rd of this month to discuss chemo treatment for the first time. I believe I will be starting chemo in about a week after my appointment. I do not know how many days a week I will be getting treatment but I saw one of your replies not to take the Fenbendazole few days prior and a day or two after chemo. Sounds like I should wait to speak with Oncologist first to see how many times a week I will be getting chemo if that is the case but I was hoping to start the protocol asap. Would you recommend to wait or just to go ahead and start? Thank You

    1. fenbendazole

      Hello, Kimberly, thank you for a question.
      We believe that the most effective course of action is to wait for a doctor’s appointment before developing a protocol for fenbendazole treatment, once you are certain of your chemotherapy regimen. The duration of the “rest phase” of a treatment cycle, which is the interval between chemotherapy cycles, is subject to variation contingent upon the particular chemotherapy regimen that is prescribed. This period can typically span from a few days to several weeks. It generally operates as follows:
      Weekly Cycles: Chemotherapy may be administered to patients on a weekly basis, with the remaining week designated for recuperation prior to the subsequent dose.

      Three-week cycles involve the administration of chemotherapy to a patient on the initial and possibly eighth day, after which the patient undergoes a period of recuperation until the subsequent cycle commences approximately two weeks later. This enables the body to recuperate and generate fresh, healthy cells.

      Four-week cycles involve the administration of chemotherapy for a consecutive few days during the initial few days, followed by a recovery period of approximately three to four weeks during which no chemotherapy is administered.

      1. Minde

        Hello, my wife has stage 4 cancer, a course of chemotherapy is prescribed every 3 weeks.
        according to the calculator it is 222mg.
        1. Can she use fenbendazole during chemotherapy?
        2. When is the best time to use it?

        1. fenbendazole

          Hello and thank you for a great question!
          Fenbendazole should be administered between chemotherapy cycles. Before chemotherapy, your wife may discontinue a protocol for at least two days, and she may resume use two days after treatment. This is due to the fact that chemotherapy primarily targets cells that proliferate rapidly, such as cancer, skin, hair, and nails. On the other hand, because fenbendazole inhibits the multiplication of cancer cells, chemotherapy may be a little less successful against them; however, optimal outcomes are desired from both therapies.

          Best regards to you and your Spouse!

  11. Doug

    Sorry if this repeats a question. For “bio-available Curcumin”. I have some which is 1) mixed with black pepper and 2) says “With BioPerines”

    ??

    Thanks

    1. fenbendazole

      Hello Doug,
      Thank you for your question. Both mentioned options are suitable. Because the absorption of curcumin is increased by piperine in any form.

  12. Mark Aaron

    Thank you for all your time and effort helping everyone. I’ve got 444mg capsules. To accurately cut the dose in half could I open the cap and mix it in 2 oz of a beverage then split it into 1 oz shots, taking 1 per day? And if so, what would be the best type of beverage?

    1. fenbendazole

      Hello, Mark! Thank you for a question
      Yes, you may divide the dose this way. You may add it to yogurt, juice, smoothies, or even water. Please bear in mind that fenbendazole does not dissolve in water. So, you may add a few drops of a fatty substance, such as olive oil.

  13. Deedee

    How does this work for lymphoma in dogs

  14. Dolly

    my husband is a 1.5 year survivor of GBM frontal methalated tumor, post chemo/rad with surg. of 98% reduction.
    It is coming back agressivley.
    It is ok to take fenbendazole (7 days on) and Artemisnin together?
    with the milk thisle, curcumin, cbd oil, bedadine, quercetin and frankincense as well?

    1. fenbendazole

      Hello, Dolly. Thank you for a question!
      We suggest making pauses. Please visit our Dosage Guide section to calculate dosage you may need. Pauses are important for your liver to restore. Fenbendazole half life may be up to 20+ hours in a human body, so you may need pauses to make time for your liver to deal with the load. If you use fenbendazole all week straight, fenbendazole may accumulate and cause liver stress.

  15. Cheryl

    I ordered Fenbendazole 3 gm Pill, Panacur Brand 1st Quality. I received Boli or Bolus (used for large animals) which I wasn’t expecting. Additional ingredients are Excipients-q.s. (?) and Colour-Tartrazine. These large pills are easy to break down and are tasteless. Is this okay to use for men and women at the appropriate dosage? Thank you for answering so many questions!

    1. fenbendazole

      Hello, Cheryl and thank you for asking.
      “Excipients-q.s” stands for “quantum satis,” a Latin term meaning “as much as is needed.” In pharmaceutical formulations, it indicates that the amount of excipients (inactive ingredients) used should be adjusted to achieve the desired volume or consistency of the final product. Essentially, it implies that the quantity of excipients should be sufficient to fulfill the intended purpose of the formulation, such as providing stability, improving solubility, or aiding in the manufacturing process.

      “Colour-Tartrazine” refers to the food additive Tartrazine, also known as E102 or FD&C Yellow No. 5. It is a synthetic lemon yellow dye used in various food and beverage products to impart a yellow or greenish-yellow color. Tartrazine is commonly found in items such as candies, soft drinks, snacks, cereals, and desserts. However, it’s worth noting that some individuals may be sensitive to Tartrazine, and it has been associated with allergic reactions and intolerance in some people. Therefore, products containing Tartrazine are often labeled to alert consumers who may wish to avoid it.

    2. William

      I don’t have cancer, I just started today for cancer prevention, do I take 1 222mg fenben 3 on 4 off for 10 weeks also add 600mg curcumin and vitamin E. Do I need to take milk thistle daily or no.

      1. fenbendazole

        Hello, William.
        Milk thistle is recommended. Milk thistle, scientifically known as Silybum marianum, contains an active compound called silymarin, responsible for its liver-protective effects. Silymarin has antioxidant, anti-inflammatory, and hepatoprotective properties.

  16. Eva

    I had been taking a parp inhibitor for 6 months, but it was not working. My numbers had gone back up to CA148, so I decided to start taking the fenbendazole. I have been on it for 8 weeks. At 4 weeks my numbers were at 108, then at 8 weeks they were at 44. I have been following the protocol of 3 days on and 4 days off. I understand that I am to take up to 10 weeks. My labwork will be at 12 weeks. So I then woud be totally off for 10 weeks. I’m wanting to make sure my markers are below 35. Can I stay on week 11 and week 12 to make sure they come down before I take the 10 week break? And once my numbers are down how often in the year do I repeat the 10 weeks protocol?

    1. fenbendazole

      Hello, Eva, thank you for a question!
      Congratulations on your positive results; we sincerely hope tests will be the best possible. Furthermore, it is recommended that you continue to the protocol for an additional few weeks only if your liver exhibits favorable tolerance to fenbendazole, you do not experience any adverse effects, and your liver enzyme blood tests remain within the normal range. If all is well, then the duration of the protocol may be extended. Once your numbers are down, you can repeat the protocol every 4-6 months (2-3 times in a year)

  17. Naree

    Hi, My Mum has just been diagnosed with breast cancer, would fenbendazole be ok to use when she is on high blood pressure tablets and cholesterol tablets and she also as osteoporosis and has injection for the osteoporosis. Thank you, Naree

  18. Fil

    Can i take Mebendazole while I’m on Pabi-Dexamethason (Glucocorticoid)?

    I want to start with mebendazole but I’m still taking these pills that I got from my doctor

    1. fenbendazole

      Hello, Fil and thank you a question.
      While fenbendazole is generally considered safe and well-tolerated, interactions with other medications can occur and are not always known, so you might want to consult with a health care professional. We could not find any data about benzimidazoles interaction with corticosteroids. Chances that two drugs will create negative synergy are slim, but we can not advise you to mix it without knowing the outcomes.

  19. Paul

    Has anyone taken fenben while also taking 1300mg a day of Tylenol. I must take this daily for paine.

    1. fenbendazole

      Hello, Paul, thank you for a question.
      It’s essential to follow the recommended dosage guidelines and avoid exceeding the maximum daily dose without consulting a healthcare professional. If you’re taking 1300 milligrams per day of Tylenol, you should be cautious and monitor for any signs of liver problems, such as abdominal pain, nausea, vomiting, jaundice, or changes in liver enzyme levels through blood tests. When combining fenbendazole and Tylenol, it is imperative that you exercise additional caution and remember to take milk thistle for the benefit of your liver. In contrast, fenbendazole does not exhibit any additional recognized adverse effects.

  20. Sam Buck

    I am experiencing late stage four prostate cancer with mets to my liver, bones, & lymph nodes. I’ve been on the protocol for over 3 months with no apparent benefit.
    Do you know of any cases, in which an increase or addition has demonstrated an improved result?
    Conversely, it will also be very helpful to know if you know of those for which, for some reason or another, this protocol did not work. I have been wondering if the Lupron may be impeding progress. As you can imagine, any feedback will be greatly appreciated. Thank you for your service. Sam

    1. fenbendazole

      Hello, Sam! Thank you for a question!
      We do know cases when fenbendazole really helped in similar cases. Unfortunately, there are instances in which it failed to produce the desired results.

      There may be lots of factors that can influence treatment effectiveness:

      Genetic Factors: Genetic mutations and alterations in cancer cells can affect their sensitivity to fenbendazole and other treatments. Variations in drug metabolism, drug transporters, and drug targets can influence how cancer cells respond to fenbendazole therapy.

      Treatment Resistance: Cancer cells can develop resistance to fenbendazole and other therapies through various mechanisms, such as mutations in drug targets, activation of alternative survival pathways, and changes in the tumor microenvironment. Over time, cancer cells may become less responsive to fenbendazole treatment, leading to treatment failure.

      Individual Differences: Each person’s response to fenbendazole therapy can vary based on factors such as overall health, immune function, lifestyle factors, and concurrent medications. Additionally, the presence of comorbidities or other underlying health conditions may affect treatment outcomes.

  21. Pam

    Some people seem to use a 1g packet of fenben Panacur.. Which is 4 Xs the 222mg. Is that the loading dose or that in correct.

    1. fenbendazole

      Hello, Pam! Thank you for the question.
      One gram of Panacur has 22% of fenbendazole. It means that in one packet you get 222mg of pure fenbendazole. It is not a loading dose – it is maintenance dosage with Panacur.

  22. karen tieman

    Hi there!
    What dosage would you take if it is in liquid for (100g per litre) for parasite treatment please?

  23. Anonymous

    Do you mind if I quote a few of your articles as long as I provide
    credit and sources back to your webpage? My blog is in the very same
    niche as yours and my users would definitely benefit from some
    of the information you provide here. Please let me know
    if this alright with you. Thanks a lot!

    1. fenbendazole

      Hello and thank you for kind words!
      As long as you provide credit and sources back to our webpage, feel free to share this information with the public!

      1. Susannah

        I have stage IIIb high grade ovarian cancer that has spread to surfaces of my liver, bowel, bladder, spleen, and several other surfaces within peritoneum. I am in the middle of chemo, and had a CT scan last week showing progression, especially around the surface of my liver. I am starting my fourth round of chemo tomorrow, and I just started taking daily 222mg fenben over the past four days, and will take a break two days before and after chemo.
        Question 1: is it okay to take fenbendazole while fasting?
        My liver enzymes were slightly elevated before chemo, and have been trending down. I will get new liver test results tomorrow, which may show effects of four days of fenben.
        Question 2: how frequently should I have liver enzymes tested?

        1. fenbendazole

          Dear Susannah, thank you for your question.
          We would like to begin by stating that fasting is already a tremendous physical strain and that we do not recommend it. Fenbendazole is reabsorbable into the bloodstream through the digestive tract. Thus, fasting inhibits metabolism, reduces the efficacy of fenbendazole, and places a tremendous strain on the liver.
          Additionally, we advise discontinuing fenbendazole a few days prior to, during, and subsequent to chemotherapy.
          In response to your second question, perform an enzyme test every two months at minimum. The more frequent- the better.

  24. Sue

    Can fenbendazole be taken while receiving chemotherapy? Thank you

    1. fenbendazole

      Greetings, Sue! Your question is greatly appreciated. Greetings!
      It is recommended, according to the most reliable practices, to discontinue fenbendazole at least two days prior to your chemotherapy session and to resume it no sooner than a few days after your discharge from the hospital. Chemotherapy primarily targets rapidly proliferating cells within the body, including those associated with cancer, hair, nails, skin, and more. The administration of fenbendazole results in the inhibition of cancer proliferation and a reduction in the efficacy of subsequent chemotherapy. Although fenbendazole works well in conjunction with chemotherapy, be sure to discontinue use as directed.

  25. Peggy Demetrius

    Has this ever been used for Essential Thromblcythemia?

    1. fenbendazole

      Hello, Peggy, thank you for a question!
      Essential thrombocythemia (ET) is not a type of cancer. It is a chronic blood disorder. While ET shares some similarities with cancers, such as abnormal cell growth and proliferation, it is classified as a myeloproliferative neoplasm (MPN) rather than a cancer. As of our most recent knowledge, there is little scientific evidence to support the use of fenbendazole for essential thrombocythemia.

  26. Kyle Travers

    HI: I’m researching Fenben for parasites (for myself). I was born with only my left kidney, so I am cautious about medications that I take. I would like to know if there has been any reported damage to human kidneys – from the research that I’ve done so far, I have not seen any. Thank you.

    1. fenbendazole

      Hello, Kyle! Thank you for a question.
      As of our knowledge, there have been no reported cases of kidney damage specifically attributed to fenbendazole use in humans.
      Since you have a unique medical history with only one kidney, it’s important to exercise caution before starting any new medication, including fenbendazole. If you experience any unusual symptoms or changes in kidney function while taking fenbendazole, such as changes in urination, swelling, or discomfort in the kidney area, it’s important to seek medical attention promptly.

  27. Oskar

    Hi there, appreciate all the work you do.

    So my wife and i have been taking fenben as a prophylactic following the dosages the past several months. No ill effects from it at all, experiencing good health overall.

    We recently found out she is 5weeks pregnant, what is your *purely educational* opinion on keeping my wife treated for parasites during pregnancy?

    Thanks

    1. fenbendazole

      Hi, Oskar, thank you for your question!
      If you’re thinking about keeping up with Fenbendazole while pregnant, the best step is to chat with a doctor first since there’s no clear info on its safety during pregnancy in the documents I have. Also, keeping an eye on liver health might be a good idea, and maybe even taking it a bit easier with the dosing schedule could be wise. Just to play it safe for both mom and the little one on the way.

  28. Becky

    I’ve been fighting ovarian cancer for 5 years. There is no sign of cancer in my abdomen but has now moved to spots on my liver, diaphragm and a lymph node. I started on a regimen of ivermectin along with my chemotherapy. My latest scan shows most spots have gotten smaller. I would also like to supplement with fenbendazole. Do you think I should stop the ivermectin and only do fenbendazole? Maybe alternate? or is it safe to take both together?

    1. fenbendazole

      Dear Becky, thank you for the question! We think that fenbendazole is enough. Ivermectin is not as predictable on your organism and the dosage is unclear. You should be just fine with fenbendazole alone, given it has less side effects and it is more easy to avoid them. Stay strong and God bless!

  29. Suzanne

    Hello i am taking Fenbendazole for the cancer protocol and am experiencing a grey colored stool for the past 2 days. Is this sometime i should be worried about? Thank you

    1. fenbendazole

      Dear Suzanne, thank you for your question! Fenbendazole does not change color of your feces. You should go to a medic care professionals to evaluate your health, because grey feces may indicate some other condition, but it is not related to fenbendazole.

  30. Sherry

    My husband has read that Fenben can cause bacterial infections. Is there research somewhere where I can read about this?

    1. fenbendazole

      Hello Sherry, thank you for a question. However, It’s essential to follow the recommended dosage and administration guidelines when using fenbendazole. We have not found information about fenbendazole causing bacterial infection and never had people commenting of getting infection related to fenbendazole use. Theoretically there could be some rare cases, where it may potentially disrupt the balance of bacteria in the gastrointestinal tract, leading to an overgrowth of bacteria or opportunistic infections. But such cases could happen only if a person does not use the instructions and uses fenbendazole inadequately.

  31. Stevan Papic

    How safe is the usage of Fenbendazole designated for animals, in humans? Thanks

    1. fenbendazole

      Hello Stevan and thank you for this question.
      Based on toxicology studies, benzimidazoles such as Fenbendazole, Mebendazole or Albendazole seem to be safe drugs.
      However, a drug without any side-effects does not exist. Scientific data reports do not reveal significant adverse reactions from taking fenbendazole. Despite the fact, there are anecdotal reports of potential toxicity:
      Up to 5 % of people can experience stomach discomfort or diarrhea when taking large quantities of fenbendazole with no breaks.
      People with severe liver or kidney failure have lower medication excretion rates, therefore, fenbendazole can accumulate and cause unexpected side-effects. Doses should be divided accordingly in this situation.
      When used in large quantities for a long period of time without breaks, fenbendazole can cause an asymptomatic liver enzyme increase due to the fact of the substance being mainly metabolized in the liver. This is reversible with the help of a couple week pause from the medication.

  32. Judith A. Walker

    Has anyone bought the Sodium Dichloroacetate talked about here on the web? I’ve been thinking of adding it to my FenBen treatment. Thanks!

  33. Amy

    Can fenbendazole help with Posterior Cortical Atrophy (PCA) or any type of Alzheimer’s or dementia?

    1. fenbendazole

      Hello Amy, thank you the question. While some research suggests that fenbendazole may have potential neuroprotective properties in preclinical models, its efficacy and safety for treating neurodegenerative diseases in humans have not been established.

  34. Naomi Khan

    Has there been success with Fenbendazole and stage 4 HS Ovarian cancer?

  35. Rob Presler

    What type of CBD oil is recommended: full spectrum, broad spectrum, or isolate?

    1. fenbendazole

      Hey, Rob, thank you for your question.
      There is no major difference because THC is not essential. It doesn’t make much difference which spectrum you use. THC only enhances appetite if the patient does not have any. CBD just helps you sleep better and relax down.

  36. Becky

    I want to purchase fenben for my 35 plus lb beagle who has mammary tumors. I have no clue what to buy, how much to give.. thanks for your help

  37. Dee

    For peacocks, how much should we add to a gallon of water?

    1. fenbendazole

      Dear Dee,
      Thank you for a comment! Peacocks can be sensitive to medications, and the dosage may vary based on factors such as the weight of the bird, the type of parasites being targeted, and the severity of the infestation. Additionally, the concentration of fenbendazole in water can vary depending on the formulation of the medication.

      It’s essential to consult with a veterinarian who has experience with avian medicine to determine the correct dosage and administration method for treating parasites in peacocks.

  38. Carrie Venclauskas

    Is there a protocol to use fenbendazole for cancer prevention in dogs who have thus far been cancer free age 2 years old and 3 years old. I have lost two dogs to cancer – so would like to do anything I can to avoid it. Please advise.

    Kindest regards,

    Carrie Venclauskas

    1. fenbendazole

      Dear Carrie,

      Hi there, and thanks for your fantastic comment! Our protocol can be utilized for prevention purposes. You can locate it in the “Fenbendazole Information” section under “Fenbendazole Dosage Guide.” Just scroll down a bit and you’ll find the “Preventing Cancer Relapse – Prophylactic Protocol.” Also, don’t forget about our dosage calculator, which you can use based on weight. We trust this information will come in handy.

      Warm regards

  39. Caroline

    Hello,
    How long does FB last …I’d love to get some now before it is somehow banned, but does it lose potency over time? How long until it expires?
    Thank you!

    1. fenbendazole

      Hey Caroline, thank you for a question!

      Fenbendazole, like many medications, can degrade over time and may lose potency if not stored properly. The shelf life of fenbendazole can vary depending on factors such as the formulation (e.g., tablets, paste, suspension) and storage conditions.

      In general, fenbendazole products typically have expiration dates printed on the packaging or label. It’s important to check the expiration date before using fenbendazole and to discard any expired medication.

      Overall, fenbendazole is a long lasting drug and should be okay to use for years if stored properly.

      To help maintain potency and stability, fenbendazole should be stored according to the manufacturer’s instructions, typically in a cool, dry place away from direct sunlight and moisture. Avoid exposing fenbendazole to extreme temperatures or environmental conditions that could accelerate degradation.

      If you’re unsure about the potency or expiration of fenbendazole, it’s best to consult with the manufacturer or pharmacist for specific guidance.

  40. Shelley

    Does it have a flavour? I opened a capsule. and tasted zero flavor

    1. fenbendazole

      Hello, Shelly!
      In general, fenbendazole is not known to have a strong or distinctive taste.

      1. Julia

        Hello
        My mother is taking fenben 2 capsules daily 440 mg with no rest day .they stopped the chemeo cause she didn’t well tolerated it.now they are going to give her kisqali 200 mg each day can she still taking fenben with? Or it will interfere with it ? Please If anyone can help my mom has mastitis cancer and wounds all over her breast no

        1. fenbendazole

          Hello Julia,
          Fenbendazole is generally regarded as safe and well-tolerated.
          We are not aware of any documented interactions with Ribociclib (Kisqali), but be aware that drug interactions can occur, and not all potential interactions are well documented. It is important to remember that all medications can have side effects.
          For this reason, we recommend that your mother regularly monitor her health and conduct routine blood tests to ensure everything remains in balance.
          We also suggest using our dose calculator. We recommend not to exceed a dose of 444mg per day. Please rely on our calculator, it is calibrated in such a way as to achieve the maximum benefit of the treatment and to cause as little harm to the patient’s body as possible.
          You can access the dose calculator by clicking on this link:
          https://www.fenbendazole.org/fenbendazole-information/fenbendazole-dosage-guide/

  41. Tanya Grachanen

    Can this drug help with the person has symptom of Parkinson? I read most of the comments and it seemed like they all have cancers not once case has Parkinson. Please let me know. Thanks.

    1. fenbendazole

      Hello Tanya, thank you for this interesting question.
      There is limited scientific evidence to support the use of fenbendazole for treating symptoms of Parkinson’s disease.

  42. LaRinda Leach

    We have the liquid Safe Guard. We would like to know the calculations for the liquid form of Safe Guard vs. the pills for humans. For both parasites and cancer. Thank you in advance.

  43. Joan Skotleski

    My 15 year old cat has squamous cell carcinoma and I have treated her with the fenbenazole for 2 months with great success! Her liver enzymes are scheduled to be tested. What is the maintenance dose after all carcinoma is gone? Any other blood work necessary and how often?

    1. fenbendazole

      Dear Joan, thank you for a question!
      Dose for maintenance can be reduced by 25% and also you can make a bigger pauses in her regiment.
      In addition to monitoring liver enzymes, your veterinarian may recommend regular blood work to assess your cat’s overall health and monitor for any potential side effects or changes in blood values. The frequency of blood tests may vary depending on your cat’s individual health status and response to treatment.

  44. Jen

    Hello, I have a 100lb. dog that had a mast cell tumor removed successfully. I would like to give him a maintenance dose of fenbendazole to prevent any future tumors/cancer, since I’ve read that this type of tumor reoccurs at a higher than average rate. Can you recommend the dose and frequency that he should be on?

    1. fenbendazole

      Greetings, Jen, Your question is appreciated.
      A calculator is applicable not only to humans but also to animals. Write weight after selecting “Protocol for” (Animal), “Species” (Dog). In the case of inactive cancer (remission), an additional day per week may pass without fenbendazole treatment, and the dosage may be decreased by 20-25%.

  45. clive white

    I have just bought a 500mg pack of Fenbendazole 45 tabs to a pack. How many should I take a day?

  46. Scott

    2 ?’s, first does fendbend have an expiration date? And is it 100% effective?…meaning that the majority of people that have been diagnosed with cancer survive? tricky question I know…but do your best. Thank you 🙂

  47. Mary Wolf

    The radiation Oncologist said my husband should not take supplements while receiving radiation.

    1. fenbendazole

      Hello, Mary. Thank you for a comment.
      You should definitely follow the advice of your physician. Traditional treatments, including radiation, primarily target rapidly dividing cells. Since fenbendazole inhibits the proliferation of cancer cells, radiation therapy may be less effective. Fenbendazole use may be discontinued two days prior to and two days following a radiation session. You may then proceed with your fenbendazole regimen.

  48. Mary Wolf

    Can my husband use Fenbendazole while receiving radiation for pancreatic Ca?

    1. fenbendazole

      Hello, Mary! Thank you for this question.
      We advise pausing fenbendazole approximately two days prior to radiation therapy and resuming it a few days afterward for optimal efficacy and minimal physiological strain. Additionally, do not overlook blood tests for the purpose of monitoring liver enzymes. Test at least every four to five months.

  49. Tyler

    Any experiences this working for Multiple Myeloma? And is there a list of chemos this is not safe with?

    1. fenbendazole

      Hello, Tyler. Thank you for a question.
      Fenbendazole is efficacious and relatively safe when combined with chemotherapy.
      Nevertheless, there are a few matters that require our attention. Traditional therapies such as radiation, chemotherapy, and others primarily target rapidly dividing cells. Fenbendazole inhibits the multiplication of cancer cells, which may reduce the efficacy of chemotherapy. Fenbendazole use may be discontinued two days prior to and two days following a radiation session. You may then proceed with your fenbendazole regimen.

  50. Tim Walsh

    Hello,
    Is there a difference between Fenbendazole and Albendazole? Can Albendazole be used in place of Fenbendazole?
    Thank you!
    TW

    1. fenbendazole

      Hello and thank you for this question.
      The qualities of every benzimidazole are quite comparable. Albendazole, mebendazole, and fenbendazole are the most well-known, but fenbendazole has been the subject of more research regarding its use in cancer cases. However, considering albendazole’s properties, it ought to function as well.

  51. Mashumichelle

    How much is too much?

    1. fenbendazole

      Hello Mashumichelle, thank you for this interesting question!
      The term “too much” is subjective, as the effectiveness of fenbendazole varies considerably between individuals. First, the half-life of fenbendazole varies between 2 and 24 hours. Furthermore, hepatic copasity in humans is highly variable, varying among factors such as genetics, age, gender, and immune system status. Therefore, you should undergo blood tests for liver enzymes at least once every three months to ensure that the levels are not excessive.

  52. Ronald Warner

    Dear friends, my 87 year old wife has been treated for 4 years with chemotherapy for ovarian cancer. Her cancer marker (CA125) has been climbing, she is fatigued and weak. Is it okay for her to take Fenbendazole alongside the chemo ? Can she benefit from doing so? I would very much appreciate your advice.

    Thank you very much and merry Christmas
    Ron Warner
    Muncie, Indiana

    1. fenbendazole

      Hello, Ronald. Thank you for a question.
      Fenbendazole is efficacious and relatively safe when combined with chemotherapy.
      Nevertheless, there are a few matters that require our attention. Traditional therapies such as radiation, chemotherapy, and others primarily target rapidly dividing cells. Fenbendazole inhibits the multiplication of cancer cells, which may reduce the efficacy of chemotherapy. Fenbendazole use may be discontinued two days prior to and two days following a radiation session. You may then proceed with your fenbendazole regimen.

  53. Yelena

    Can I give a treatment to my 3yo child. And how much should I give him to prevent parasites.

    1. fenbendazole

      Hello Yelena,
      Depending on your child’s age, we recommend consulting with your pediatrician, who can prescribe the appropriate anthelmintic medication.

  54. Jim Mitchell

    Will Fenbendazole with ivermectin normalize glucose levels? If so what dosage & frequency

    1. fenbendazole

      Hello, Jim, thank you for a question!
      There is limited evidence suggesting that benzimidazoles and ivermactin, may have the potential to affect blood glucose levels, but the mechanisms and significance of this effect are not well-understood. Some studies have reported changes in glucose metabolism in animals treated with benzimidazoles, but further research is needed to clarify these findings and determine their relevance in humans.

  55. Rosa

    Can I take fenbendazole and begin a herbal parasite cleanse?

    1. fenbendazole

      Hello, Rosa!
      Yes, you can do fenbendazole protocol for parasites and meanwhile use herbal remedies for a cleanse. Fenbendazole has only a few side effects and is considered safe. However it is hard to consult more, since we do not know what herbal remedies you are using. You should monitor liver enzyme changes via blood test and see how is is your overall health. Consult with a doctor if needed. Best regards!

  56. Deborah

    Wondering if there are any studies or information on how fenbendazole effects the microbiome health?

    1. fenbendazole

      Dear Deborah,
      Based on toxicology studies, benzimidazoles like Fenbendazole, Mebendazole, and Albendazole are generally considered safe. However, no drug is completely free of side effects. While scientific data does not indicate significant adverse reactions from taking fenbendazole, there are anecdotal reports of potential toxicity:
      Up to 5% of individuals may experience stomach discomfort or diarrhea when taking large quantities of fenbendazole continuously without breaks.

  57. L

    Does this work in relation to breast cancer, mets to liver ? Or anywhere else in the body

  58. Mary

    I found 1000mg fenbenzadole tablets from an online pharmacy in India. The brand is Jeerima, and the packaging says each tablet actually contains 1000 mg fenbenzadole, with no other fillers. If I break each tablet into four equal pieces, and swallow one piece a day (approximately 250mg/piece of the tablet), do you think that should be acceptable if I’m trying to get close to the 222mg/day dose? And do you think I can just swallow the piece whole, rather than grinding it in to powder? It just seems the other brands available have other ingredients or fillers that make up part of that 1000mg total, and they come in powder instead of tablet form. So I want to make sure I’m comparing apples to apples when comparing these tablets to the powder forms. Thank you.

    1. fenbendazole

      Hello Mary,
      If your recommended daily dose of Fenbendazole is 222mg, it is perfectly safe to take 250mg. You can achieve this by dividing a 1000mg tablet into four equal parts. Regarding your question about the form of Fenbendazole—whether powder or tablets—it will not affect the absorption of the active substance, so choose whichever form is more convenient for you.
      It is important to note that tablets contain additives to maintain their shape, whereas powder is a pure form without impurities. Given this, I recommend reviewing the products from reliable suppliers on our website to make an informed decision about which form to use.
      You can find more information and options at: https://www.fenbendazole.org/suppliers/

  59. Vidya

    You mentioned the possibility of liver injury with longer term use of fenbendazole. I appreciate how your protocol includes herbs and also breaks from fenben to prevent that from happening. One thought I had was that liver injury can also be compounded by chronic high dose of curcumin? Also, can you please comment on the side effects of fenbendazole on the bone marrow? I came across some reports of general bone marrow suppression and neutropenia in particular. Has your protocol been evaluated for this?

    1. fenbendazole

      Dear Vidya,
      Thank you for your question.
      Curcumin should not cause any adverse effects when administered in accordance with our protocol. On the contrary, prolonged use of substantial quantities may result in adverse effects.
      Regarding the second aspect of your question, it is indisputable that chronic administration of high concentrations of Fenbendazole has an impact on the bone marrow. However, our protocol is structured to allow you to select a safe dosage and administration schedule that includes recovery periods. Fenbendazole should therefore have no adverse effect on the bone marrow when administered as directed.

  60. Michelle

    Does fenbendazole treatment work for lymphoma? My uncle was just diagnosed with large b cell lymphoma. He is so sick now since they dragged their feet and he can’t do chemo. I’ve been trying to get my aunt to give him the fenben I bought.

    1. fenbendazole

      Dear Michelle,
      There are known studies on the possible positive effect of Fenbendazole in the treatment of lymphoma. Because of this, your uncle may start using Fenbendazole.
      However, considering your uncle’s serious condition, the treatment may not give the desired results. But it can influence the course of disease development and slow it down.
      If you decide to give Fenbendazole to your uncle, taking into account the serious condition of the patient, be sure to monitor his general condition and do regular blood tests.

  61. Bec

    Are there any success stories or research on Fenben and autoimmune? Like Rheumatoid Arthritis?

    1. fenbendazole

      Hello Bec,
      Fenbendazole is primarily an antiparasitic drug used to treat infections caused by various parasites, commonly in animals. It belongs to a class of drugs known as benzimidazoles. Although fenbendazole is primarily used for parasitic infections, there has been some evidence and experimental studies exploring its effects on other conditions, including certain cancers, due to its potential anti-inflammatory and immune-modulating properties.
      However, there is limited to no clinical evidence supporting fenbendazole’s effectiveness for treating arthritis in humans. The use of fenbendazole for conditions other than its approved indications, especially in humans, should be approached with caution and ideally under the guidance of a healthcare provider.
      If you or someone you know is considering fenbendazole for arthritis, it’s important to consult with a medical professional to discuss the potential benefits, risks, and evidence-based treatment options available for arthritis management.

  62. Connie

    what is the purpose of taking the CBD oil? Is it just for pain? Can it be left out of the protocol treatment?

    1. fenbendazole

      Dear Connie,
      CBD may help alleviate symptoms associated with cancer and its treatments, including pain, inflammation, nausea, and anxiety. However, its use is not mandatory but rather recommended as part of a broader treatment plan. When deciding to incorporate supplements or medications like CBD, it’s crucial to always consider the patient’s specific condition and overall well-being.

  63. Michele Murphy

    I’m currently using fenbendazole on my dog for cancer. I’m using it everyday as I feel her cancer is progressing quickly. She is on other meds for pain and also prednisone. My question is: can acetaminophen with codeine be used with fenben? I read someone’s blog that stated they shouldn’t be used together. I have a few times but won’t anymore until I find the answer. Thank you.

    1. fenbendazole

      Hello Michele,
      Fenbendazole is generally recognized as safe and well-tolerated. However, several scientific articles have discussed potential liver effects when Fenbendazole is used with Acetaminophen.
      Therefore, it is important to consult with your veterinarian before making a decision. If you decide to administer Fenbendazole along with Acetaminophen and Codeine, we recommend closely monitoring your dog throughout the day and conducting regular blood tests and enzyme tests to ensure your dog’s well-being.

  64. Louis lane

    To obtain curcumin, is it possible to take , curkuma and extract curcumin from it?
    The real question is; is curcumin a ingredient of curcuma?
    My wife is diagnosed with fast-growing troath-canser (begin okt ’23) chemo is out of the question as also radiation . She started with Panacur begin nov. And reacted good, began eating again and regained strength. The radiation treatment that was offered to her to reduce pain, turned the recovery around, and only stopping eating and sick feeling was left as result. Now se is ready to continue with Panacur and additional curcumin because her age and poor liver condition.
    Has anyone tips how to get curcumin / curcuma?

    1. fenbendazole

      Hello Louis,
      It is great to hear that the Fenbendazole treatment is showing positive results for your wife’s health. Regarding your first question, curcumin is a key ingredient found in turmeric, which is a spice made from the root of the plant Curcuma longa. Curcumin is the main active component of turmeric and is responsible for its vibrant yellow color and many of its health benefits.

      In response to your second question, curcumin supplements are widely accessible and can be purchased from numerous pharmacies or online retailers.
      Additionally, we recommend considering other supplements that might enhance the benefits of Fenbendazole. You can explore a recommended list of such supplements through this link:
      https://www.fenbendazole.org/fenbendazole-information/supplements/

  65. WeRColt

    Does Fenbendazole + help with Lyme Disease or tick bite illnesses?

    1. fenbendazole

      Dear WeRColt,
      Fenbendazole is primarily recognized as an antiparasitic medication used in veterinary practices. Recently, it has garnered attention for its potential anticancer properties. However, there is no scientific evidence supporting its effectiveness in treating Lyme disease or other tick-borne illnesses.
      Lyme disease, which is caused by the bacterium Borrelia burgdorferi and transmitted through tick bites, is typically treated with antibiotics. Effective medications for this condition include doxycycline, amoxicillin, and cefuroxime, all of which target the bacterial infection directly.
      It is crucial for patients to consult with healthcare professionals for accurate diagnosis and treatment of Lyme disease or similar tick-borne diseases. These professionals can offer guidance based on established medical research, ensuring treatments are tailored to individual health requirements.

  66. Patrick

    I bought it for myself. I got the 100g powder. How often should I take it?

    1. fenbendazole

      Dear Patrick,
      Thank you for your question. Fenbendazole should be taken once daily, either with or after a meal, to enhance the medication’s absorption. For the correct dosage and schedule tailored to your body weight and treatment objectives, we recommend using our dose calculator. You can find all the necessary information and answers to your questions by visiting the following link: https://www.fenbendazole.org/fenbendazole-information/fenbendazole-dosage-guide/

  67. Beverly Ashby

    Can Fenbendazole be used topically on nails to treat nail fungus? I know I’ve read it can somewhere but can’t find the information.

    1. fenbendazole

      Dear Beverly,
      Fenbendazole is an antiparasitic medication commonly used in veterinary medicine and more recently explored for potential anti-cancer properties in humans. It is not typically formulated or intended for topical use, especially on human nails to treat fungal infections.
      For nail fungus, treatments typically involve antifungal medications specifically approved for that use, either in topical forms like creams and lacquers or in oral form for more severe cases. Examples include terbinafine, ciclopirox, and amorolfine.
      Using Fenbendazole topically for nail fungus is not supported by clinical research or medical guidelines. It’s crucial to consult a healthcare provider to get the right diagnosis and treatment recommendations for nail fungus. They can prescribe appropriate antifungal treatments that are safe and effective for your condition.

  68. Holly

    Good Evening … I accidentally purchased 444mg capsules instead of 222mg capsules. How would I be able to accurately reduce the dosage to 222mg? Thank you for any recommendations.

    1. fenbendazole

      Dear Holly,
      You can open the capsule and divide the contents in half. This approach will provide you with two doses, one for each day.
      You can mix the powder from the capsules into food, yogurt, juice, or water for consumption.

  69. Jim

    The dosage for my weight says 444 mg. Is it better to take 222 mg twice a day, morning and evening or, the whole 444 mg at once?

    1. fenbendazole

      Hello Jim,
      Fenbendazole should be taken once a day, either during or after a meal to enhance absorption. If the dose calculator has determined that your daily dosage should be 444mg based on your body weight, you should take this entire amount at one time each day.

  70. Melissa

    Whats the difference between the 444 and 222 Fenbendazole? Protocols and dosages? TYSM!

    1. fenbendazole

      Hello Melissa,
      The numbers 444 and 222 represent the dosages of Fenbendazole in milligrams. To determine the appropriate dosage schedule for your needs, you can use our dosage calculator. It’s available for free and can help you calculate the correct amount of Fenbendazole based on various factors. You can access the calculator below:
      https://www.fenbendazole.org/fenbendazole-information/fenbendazole-dosage-guide/

  71. Ljupcho

    hi Dear Sir or Madam,

    My father has HBV, unfortenatly so called “each year control potocol” falied, and he got HCC 80mm and the two smalest 40mm and 20mm. in 7 and 8 sector of liver. Twoo weeks ago he had TACE procedure on the big one, with 100% success.
    Fenbenlab has a two kind of capsules dosages, 222mg and 444mg.
    Can i bay 444mg and divadet on half, or is better 222 each ?
    Please you opinion about my intention give to him 444mg every second day or every day mon-fri and weekend rest ?

    Best wishes,
    ljupcho kotevski
    Skopje
    Macedonia
    Europe

    1. fenbendazole

      Hello Ljupcho,
      You can split the 444mg capsule in half to create a two-day supply.
      We recommend using our dose calculator to determine the correct dosage for your father. Fenbendazole should be taken once daily, following the schedule outlined by the dose calculator.
      We advise against experimenting with dosages or changing the prescribed administration schedule. Therefore, we do not recommend taking a dose higher than 444mg per day.
      Our dosage calculator is designed to maximize the effectiveness of the treatment while minimizing potential harm to the patient’s body. Given your father’s health, we suggest continuously monitoring his overall health condition and conducting regular blood and liver enzyme tests.
      You can find the dosage calculator here:
      https://www.fenbendazole.org/fenbendazole-information/fenbendazole-dosage-guide/

  72. Anita Sanders

    Would there be any problems taking this the same time as taking Essiac Tea?

    1. fenbendazole

      Hello Anita,
      Fenbendazole is generally considered safe and well-tolerated, making it likely safe to use alongside Essiac tea or other herbal supplements. However, it’s important to note that not all possible interactions are well-documented. Remember that all medications and supplements can have side effects.
      For this reason, we recommend regular monitoring of your health and routine blood tests to ensure everything remains in balance. Always consult with a healthcare professional before starting any new treatment regimen to ensure it is appropriate for your specific health needs and conditions.

  73. Anne

    Through research that I have done, I know that Fenbendazole has promising results on “organ tissue cancers” or “soft tissue cancers”. I have not found any information on the effects of Fenbendazole on bone metastasis. Can you enlighten me on this???

    1. fenbendazole

      Hello Anne,
      Some reports and preliminary studies suggest that fenbendazole may inhibit the growth of cancer cells and potentially cause cancer cell death. However, scientific evidence supporting its effectiveness in fighting bone metastases or other types of cancer in humans is still limited and not well known.
      Although there are promising signs of the possible anticancer effects of fenbendazole, it is very important to use it with caution and choose an appropriate administration schedule. You should also constantly monitor the general condition of the patient and regularly check his blood tests.
      If you are going to use fenbendazole, it should be part of a comprehensive treatment plan under the guidance of your healthcare provider and not as a substitute for standard cancer treatment.
      In conclusion, although there is some interest in fenbendazole for its potential anticancer properties, including its use in the treatment of bone metastases, more research and clinical trials are needed to confirm its effectiveness.

  74. John

    Can Fenbendazole cause your liver, angles and feet to swell? could this be a side effect?
    If so what should be done? Dose taken is 1 in the morning and 1 in the evening with a
    fatty meal with no breaks. Been diagnosed with stage 4 liver cancer.

    1. fenbendazole

      Hello. Liver cancer itself can lead to symptoms such as liver enlargement (hepatomegaly) and fluid accumulation in the abdomen (ascites), which may contribute to swelling in the ankles and feet. It is important to make pauses in your fenbendazole protocol, so that liver has time to restore. Meantime you should still be taking milk thistle for your liver. We would suggest to take a break for at least 4-7 days.

  75. Barb Tocci

    Why the vit E?

    1. fenbendazole

      Dear Barb, thank you for a great question!
      Vitamin E plays a crucial role in supporting immune function. Adequate vitamin E levels are necessary for the proper functioning of immune cells, including T cells and B cells, which play essential roles in the body’s defense against infections and cancer. By supporting immune function, vitamin E may help enhance the body’s natural ability to fight cancerous cells.

      Also anti-inflammatory effects: Vitamin E has anti-inflammatory properties that may help reduce inflammation in the body. Chronic inflammation has been linked to the development and progression of cancer, so reducing inflammation may help create a less favorable environment for cancer growth and metastasis.

      Vitamin E may enhance the anticancer effects of fenbendazole when used together.

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