When the thoroughly discredited and Big Pharma funded and supported Quackwatch site does a hit piece, it is usually a good sign that someone is on to something good which threatens the mainstream drug and treatment establishment. It's kind of like the FDA coming down on alternatives, such as cherries or bitter melon.
I note that the late doctor who authored the 13-year old piece comes from Memorial-Sloan Kettering - perhaps the most infamous anti-alternative cancer hospital out there. MSK is noted for firing Dr. Ralph Moss after he outed them for covering up positive results about laetrile and pressuring the lead researcher to lie about his study results. The head of oncology at MSK once stated that no one had ever been cured of cancer by alternatives to mainstream treatments.