Vitamin B17 helps according to the books 'World Without Cancer: The Story of Vitamin B17' by G. Edward Griffin, and 'Laetrile Case Histories: The Richardson Cancer Clinic Experience' by John A. Richardson. Vitamins cannot be patented, so companies promote other treatments instead of them. Apricot seeds and apple seeds are great sources of vitamin B17. The vitamin B17 is also called Laetrile in its purified form.
A few links to the sources:
http://realityzone.com/lch.html
http://realityzone.com/worwitcan.html
http://www.youtube.com/watch?v=JGsSEqsGLWM
http://www.amazon.com/World-Without-Cancer-Story-Vitamin/dp/...
http://www.amazon.com/Laetrile-Case-Histories-Richardson-Exp...