Fenbendazole, Ivermectin, and Mebendazole in Cancer: A 500+ Case Anecdotal Signal Analysis and Strategic Evidence Review (2026)
Executive Summary Over the past several years, repurposed antiparasitic drugs—particularly fenbendazole , mebendazole , and ivermectin —have attracted widespread attention in oncology communities. A publicly accessible compilation hosted by OneDayMD documents more than 500 anecdotal cancer cases reporting tumor regression, stabilization, or remission while using these agents, often in combination with conventional therapy or adjunctive supplements. This report does not treat these anecdotes as proof of efficacy. Instead, it applies pharmacovigilance logic, bias analysis, mechanistic plausibility review, and comparative survival context to assess whether this body of reports constitutes: Noise Wishful thinking Or a legitimate hypothesis-generating signal Conclusion: The dataset does not constitute mainstream clinical evidence. However, the signal density, mechanistic plausibility, and cross-cancer recurrence pattern justify formal prospective evaluation under controlled conditions. 1. ...