Mebendazole

Mebendazole, or Vermox, a widely used anti-helminthic drug for treating pinworm infestations in humans, blocks tubulin, which normally causes more parasites to form because it is important in cell division; tubulin is also present in cancer cells and limited studies have shown effects with Glioblastoma (GBM), lung cancer and osteosarcoma.

https://www.canceractive.com/article/pinworm-drug-mebendazole-targets-cancers-like-gbm-and-osteosarcoma