... list below: pharmacological action. 1 regulate menstrual difficulties. Dong quai extract has bi-regulating menstruation function, can alleviating ... cramps, amenorrhea and uterine contractions. 2 replenish blood. Dong quai extract has increases number of red blood cells and ... due to stagnation of blood. 4 moisten the intestines. Dong quai extract can boosts metabolism, encourage bowel movements, aid ...