Abstract:
The present invention provides a method of potentiating radiation therapy for treatment of a cancer or tumor comprising administrating to a subject in need thereof a therapeutically effective amount of a radiosensitizer in combination of a radiation therapy to a locus of the cancer or tumor, wherein the radiosensitizer is an extract of Schisandra chinensis (Turcz.) Baill, or the active ingredient isolated therefrom, particularly Schisandrin B.