Objective To investigate the effect of pheretima decoction on bleeding time and bl ood clotting time in healthy young people. Methods Bleeding ti me and blood clotting time of sampled healthy young people were determined aft er taking pheretima decoction 2 times (20?mL each time). Result Compared with that of controlling group, the bleeding time and blood clotting t i me in treating group were all significantly prolonged (P< 0.01 ). Conclusion Pheretima decoction can interfer the cour...