When the natural substance called amygdalin is purified and concentrated for use in cancer therapy, it is called Laetrile. Amygdalin is extracted from apricot seeds and prepared in both tablet and injectable form. The injectable is more concentrated and capable of delivering higher doses in a shorter period of time. It is usually recommended at the onset of treatment for patients who are seriously ill. After several weeks or a month, if the patient responds well to treatment, the physician will reduce the dosage and prescribe tablets to replace injections. This therapy is usually used in conjunction with the proteolytic enzymes, a broad-spectrum nutritional program, and a diet calling for fresh fruits and vegetables, whole grains, and the elimination of meat and dairy products for the duration of treatment. For more information go to our Laetrile information page.