Probably Fenbendazole. It is what Joe Tippins takes. 

https://www.youtube.com/results?search_query=joe+tippens+fenbendazole+#mce_temp_url#

The Joe Tippins cancer protocol is just something I found on the internet. Have no personal experience with it. May be snake oil. Not my recommendation, just information that is out there.
 
What is becoming more towards mainstream is that the antiparasitic drugs have helped chemo therapy avoid the problem of the cancers mutating and gaining resistance to the chemo drug. So they can utilize a drug that is working longer than before before having to change drugs because of resistance. At least that is what I remember. I could be wrong. Everyone should do their own research. I am interested in the stuff "just in case" because of my age.

Here is a lady that took the protocol and now has quit. 
https://www.youtube.com/watch?v=Qm06dgF3nNQ#mce_temp_url#
Sometimes the comments below the videos are as interesting as the video itself.

Joe Tippins cancer protocol.docx (8KB - 7 downloads)