A 2025 report of three patients said to have gone into remission on a dog dewormer was retracted by the journal in January 2026. It should not be cited as evidence.
The paper reported three patients with advanced breast cancer, prostate cancer and melanoma, two said to have achieved complete remission and one near-complete remission after adding fenbendazole to other therapies excluding chemotherapy, with no adverse effects (Makis case series 2025, retracted). The journal published a retraction statement on 21 January 2026 (Retraction notice 2026).
This paper circulates widely online. Anyone quoting it should know that the journal has withdrawn it.
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