Cancer Advisor

Medically Reviewed by: Dr Frank Yap, MD | Written by: OneDayMD Editorial Team | Version 2.0 — Last Updated: August 2026 (originally published February 2026) Quick Answer No randomized controlled trials support ivermectin, fenbendazole, or mebendazole as treatments for lymphoma or leukemia. The evidence consists of laboratory/mechanistic rationale, a handful of peer-reviewed case reports — several of which describe an unrelated skin-parasite indication rather than anticancer use — and roughly three dozen unverified, self-reported social media testimonials, most involving concurrent chemotherapy, radiation, or targeted therapy that confounds attribution. These drugs remain investigational and are not guideline-recommended for blood cancers; standard-of-care treatment and clinical-trial enrollment remain the evidence-backed path forward. Important Disclaimers ...