To elucidate its mechanism and ensure its efficacy, many researches have been performed on alkaloids, coumarins and saponins from it(Zhu and Ding 2002; Hu et al. 2009).
To elucidate its mechanism and ensure its efficacy, many researches have beenperformed on alkaloids, coumarins and saponins from it(Zhu and Ding 2002; Hu et al. 2009).