The experimental result is as follows:

Table 1  The influence of Ling Xueya Dan on systolic

and diastolic pressure of SHR rats

(Before medication)

Group        Dosage                  After medication                

                (mg/kg)  systolic pressure (mmHg)  diastolic pressure (mmHg)                            

Blank          ─          142±13               113±21

Bezoar hypotensor  288        143±11               117±17

pill

Ling Xueya Dan      756        146±11               124±11

Table 2.  The influence of Ling Xueya Dan on systolic

and diastolic pressure of SHR rats

(After medication for 1 months)

Group        Dosage                 After medication                

                (mg/kg)  systolic pressure (mmHg)  diastolic pressure (mmHg)                     

Blank           ─         196±10                171±9

Bezoar hypotensor   288         192±18               169±17

pill

Ling Xueya Dan     756         193±12               165±9

Table 3.  The influence of Ling Xueya Dan on systolic

and diastolic pressure of SHR rats

(After medication for 2 months)

Group        Dosage                 After medication                

                (mg/kg)  systolic pressure (mmHg)  diastolic pressure (mmHg)                           

Blank           ─          210±17               153±46

Bezoar hypotensor   288         189±12**             168±16

pill

Ling Xueya Dan     756         195±15               150±40

  As compared with blank group, * p＜0.05,  . ** p＜0.01.