Dr. Ernst T. Krebs originally came up with this concentrated formula called Laetrile in the 1970’s and after introducing it to his colleague Dr. John A. Richardson, MD. Dr. Richardson had great success pioneering the use of Laetrile along with his Richardson Clinic Protocol in Albany CA in the 1970’s, eventually after his great results he wrote the book “Laetrile Case Histories” along with Patricia Griffin, RN wife of renowned speaker and writer G. Edward Griffin.*