YMMV, but Taxol may be RIP officially. http://www.bloomberg.com/apps/news?pid=20601087&sid=aQRhuBEamXkU
The new drug, salinomycin, is toxic to humans and many other mammals. It is also meant to be used in synergy to taxol. http://www.nzma.org.nz/journal/117-1190/799/