This information is for educational purposes only. Off-label drug use carries risks. Always consult a qualified physician before using any drug outside its approved indication.
Mebendazole
Mebendazole
Brand names: Vermox, Emverm, Ovex
ORIGINALLY APPROVED FOR
Intestinal Parasites (pinworms, roundworms, tapeworms)
Mebendazole works by binding to beta-tubulin and preventing tubulin polymerisation — the same mechanism many conventional chemotherapy drugs use (taxanes, vinca alkaloids). In cancer research it has shown anti-proliferative, anti-angiogenic, and pro-apoptotic effects across multiple tumour types. A landmark case report documented a patient with Stage 4 non-small cell lung cancer who had a dramatic response after accidentally taking mebendazole. Multiple clinical trials are now underway.
Molecular Pathways Targeted
Mechanism of Action in Cancer
Binds selectively to cancer cell beta-tubulin (higher affinity than normal cells) → prevents microtubule formation → blocks mitotic spindle → arrests cell division. Also inhibits VEGFR2 (anti-angiogenesis) and activates BCL-2 inhibition (promotes apoptosis).
Cancers Studied
Typical Off-Label Dosing
100 mg twice daily (standard parasitic dose) to 200 mg three times daily (higher cancer protocols). Some protocols use 100 mg/day. Best absorbed with fatty meal. Fenbendazole is a veterinary equivalent sometimes used.
* Dosing information from research literature only. Not a prescription. Requires physician supervision.
Cautions & Drug Interactions
- Generally very well-tolerated at low doses
- High doses may cause liver enzyme elevation — monitor LFTs
- May reduce efficacy of some anticoagulants
- Avoid in first trimester of pregnancy
- Absorption varies greatly — fat-rich meal significantly increases bioavailability
- Do not confuse with fenbendazole (veterinary form — different formulation)