For centuries, Kombucha has been a popular remedy in eastern Asia. On account of its beneficial effect in the case of metabolic diseases it has now been accepted in Europe. Same as the Kefir fungus it is a sprouting fungus with antibiotic properties. Rudolf Sklenar, M.D., has successfully applied Kombucha in cases of metabolic diseases and other chronic ailments, even cancer, during his thirty years of medical practice. This book describes the fungus, its history and its geographical spread, its effect and its contents. In part II of the book I prove why with cancer therapy in particular an antibiotic remedy has to be applied.