The anti-tumor therapy involves an anti-worming agent used for horses and dogs! It has been deemed to be safe by the Food & Drug Administration. Published studies involving this canine drug, fenbendazole, date back a couple of decades.
See the full article at; https://www.lewrockwell.com/2019/05/bill-sardi/a-cancer-cure-has-gotten-out-of-control-and-has-spread-beyond-the-confines-of-modern-medicine/