Methods for using botanical compositions comprising administration of non-alcoholic organic extracts of Ganoderma lucidum, Salvia miltiorrhiza, and Scutellaria barbata in conjunction with docetaxel for cancer therapy, are provided. Method for treatment or therapy of prostate cancer in a human is provided, the method comprising: administering an effective amount of the botanical composition during a period of administering concurrently an effective amount of docetaxel, wherein the concurrent administration of the docetaxel and the botanical composition achieves a therapeutic effect that is more effective than either agent alone.