laetrile
(LAY-eh-tril)
A purified form of amygdalin made in the laboratory. Amygdalin is a substance found in the pits of some fruits, such as apricots, and in raw nuts and plants. Laetrile has been used in some countries as a treatment for cancer, but it has not been shown to work in human clinical trials. It is not approved for use in the United States.