I have been taking Fenbendazole as preventive maintenance for my cancer (in hopes of keeping it in remission) I did have elevated Liver enzymes, so I stopped taking it for a month and my Enzyme levels returned to normal I want to start taking it again but not sure about the dosage and if I will get serious liver damage with continued use?
Dear Feb26
Thank you for getting in touch and a warm welcome to our online community. My name is Gillian and I am one of the cancer information nurse specialists here at Macmillan.
I am pleased to read that you are in remission from your bladder cancer, and that your liver enzyme levels have improved. This must feel encouraging.
Fenbendazole is a veterinary antiparasitic used in animals. It is not licensed for human use. Recently, there has been increased talk of using these medications as repurposed drugs for anti-cancer therapy on social media.
A present, no large-scale clinical trials exist. Some small randomised clinical trials have looked at these drugs in laboratory settings and mice. These suggest some anti-cancer properties, but further research is needed.
There is currently no strong scientific evidence base to support the use of fenbendazole for cancer treatment, and it has not been proven to be safe for human consumption. No clinical trials have been done on humans.
There are also concerns the drug may affect liver function in humans. You have already experienced raised liver enzymes that improved after stopping fenbendazole. This may suggest your liver was affected by the drug and restarting it could lead to repeated or possibly more severe liver toxicities.
We strongly advise you discuss this further with your Consultant who may be able to suggest more suitable treatment options or clinical trial for your cancer.
I hope this information is useful. Please don’t hesitate to get back in touch by email, webchat or phone, if you need further information or support.
The Macmillan Support Line offers practical, clinical, financial and emotional support. You can call us free from landlines and from most mobile phone networks* on 0808 808 00 00, 7 days a week, 8am – 8pm.
Best wishes
Gillian, (Cancer information support
Ref GG/Lrob
