Should you decide to look outside the box a bit, you might take a look at oleander based medicines. Two are currently in FDA trials and one, named Anvirzel, has already passed phase I toxicity trials and is available via FDA exception rule from the Salud Integral Clinic in Honduras
http://www.saludintegral.hn
Oleander in various forms, including the patented medicine being tested as well as an herbal supplement from South Africa named Sutherlandia OPC has had impressive results against a wide range of cancers, including brain cancers and it crosses the blood-brain barrier.
You can find a number of articles as well as a list of peer reviewed studies on oleander at:
http://www.tbyil.com/articles.htm
There is also a health group devoted to oleander medicines at Yahoo:
http://health.groups.yahoo.com/group/oleandersoup/
As chance would have it, I received this wonderful email from my own auntie yesterday, which made my day and gladdened my heart:
"Your Uncle Edward wanted to tell you he got a good report on his last physical exam at the VA Hospital in Bonham and for all practical purposes the lung cancer is gone. He wants to give you credit for helping him beat the cancer.
The established medical profession can call oleander extract snake oil if they wish, but they are as full of sh*t as a Christmas goose, it works. The tragedy is that more people do not know about it."
Pardon her "french" if you will, but I guess once you are past 80 you can be afforded some extra privileges - lol.