Most of these products provide some hope for patients with a terminal illness. As far as I am concerned, these are really placebo effects. There is NO solid evidence to support its use clinically. But, we all know medicine is not all science, a lot of times, art, hope and faith have something to do with it as well. Dr. Stanley Zheng at Yee Hong Centre is best person to ask for this sort of stuff. He is probably the most qualified local physician I know in this area.