Rung Five
Supplements
Unclear

Mebendazole

a human deworming drug promoted online for cancer. Sold as cures.

Verdict
UnclearThere isn't enough human evidence to say either way.
How sure
Rung 1 · UnprovenLab or animal data only, or never directly tested in people.

The rung shows how sure the science is, not how big the effect is. How to read these ratings

Cancers affected

None shown in people

What the evidence shows

A 2014 review by the Repurposing Drugs in Oncology project found anticancer effects in many lab and animal studies, but the evidence in people was two case reports. The authors called for clinical trials, mainly alongside existing chemotherapy.

What to do

Not a proven cancer treatment. Don't take it except in a clinical trial or with your oncologist's agreement.

Sources

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Related

Every supplement we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.