On January 28, 2000, Logan began receiving treatment from Dr. Stanislaw Burzynski in Houston, Texas. Dr. Burzynski's drug is called "antineoplastons". More information about Dr. Burzynski and his drug can be found from the following links.
This is Dr. Burzynski's official website.
This website was put together by some of Burzynski's patients.
This is a somewhat more detailed discussion of Dr. Burzynski's work.