I've read about Joe Tippens and his use of a dog dewormer for cancer treatment. Can you tell me which specific dog dewormer he used ?

As part of the protocol Joe Tippens developed to cure himself of stage 4 lung cancer, he took Panacur® C.
Tippes recommends 1 gr. of Panacur® C per day for 3 consecutive days followed by 4 days off and then repeated. (Each gram of Panacur C has 222mg of Fenbendazole).
Panacur C can be ordered online, on Amazon