Cancer Advisor | One Day MD

Medically reviewed by Dr. Frank Yap, MD  |  Written by OneDayMD Editorial Team  |  Last updated October 2026 Quick Answer No single dietary supplement is established as a universal cancer treatment. Of the 17 supplements reviewed here, the deepest human evidence supports vitamin D3 (with K2 and magnesium) , polysaccharide-K (PSK) from turkey tail as an add-on to chemotherapy in Japanese trials, berberine for preventing colorectal adenoma recurrence, omega-3 fatty acids , curcumin and green tea EGCG . Even these show mixed rather than uniformly positive results. Melatonin looked promising in small trials, but the largest randomized trial found no benefit in early-stage lung cancer. A few supplements, namely high-dose beta-carotene, vitamin E and long-term high-dose B6/B12 , have been linked to higher cancer risk in specific groups. No supplement replaces conventional cancer treatment, and antioxidant pills are generally discouraged during chemo...

This is a supplementary article that contain the case details, sources and references for the primary compilation article . Note: The case reports below offer detailed, practical information on fenbendazole, ivermectin, and cancer that clinicians can find both useful and actionable. Fenbendazole and Ivermectin Prostate Cancer Case Series Compilation and Presentations This compilation features several case reports from multiple sources involving the use of ivermectin and/or fenbendazole for prostate cancer. Tables 1 - 3 below provide a summary of the information for the cases presented in this paper, including therapies used, dosage, outcome, and prior treatments. The cases are organised into tables grouped by primary drug emphasis (FBZ-focused (Table 1), IVM-focused (Table 2), or combinations (Table 3)). Each table includes key details: case number, patient demographics, cancer details, protocol, outcomes, and notes. Due to volume, only high-detail cases are prioritized. For details o...