The invention provides a composition comprising a mixture of extracts obtained from Atractylodes macrocephala, Astragalus membranaceus, Taraxacum mongolicum, Poria cocos, Ligusticum chuanxiong, Ligustrum lucidum, Codonopsis pilosula, Glycyrrhiza uralensis, Hedyotis diffusa, Pseudostellaria heterophylla, and Viola philippica. The present invention further provides a method for treating metastatic breast cancer in a subject in need thereof, comprising: administering to said subject an pharmaceutically effective amount of the composition.
