Xing Ren or Bei Xing Ren or Ku Xing Ren is also known as Bitter Apricot Kernel. The warm, bitter and slightly toxic herb has been used in TCM to treat coughing and asthma, enhance bowl movement. moisten the intestine, etc, as it calms cough and asthma, enhances expeling of phlegm, stop conspitation, etc., by …