Ivermectin, Mebendazole and Fenbendazole for Breast Cancer: A Case Series of 130 Case Reports (August 2026 Update)

Abstract Background: Drug repurposing has emerged as a strategy in oncology to identify low-cost, widely available agents with potential anticancer activity. Antiparasitic benzimidazoles (fenbendazole, mebendazole) and the macrocyclic lactone ivermectin have been proposed as adjunctive therapies in breast cancer based on preclinical mechanistic data and anecdotal clinical reports. Interest has…