Gary has this right. Used in clinics in Mexico (and now unfortunately sold on the web to those looking for something "natural" or without other hope) that milked thousands of people for their money and had no effect on their cancers...or deaths. The FDA would never let it fly in the US because it just didn't work. Save your money on the book and on the web based businesses that sell B17. Things are only worth a try if they can demonstrate evidence of success. This technique/product does not fall into that realm.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.