Dang Huang Expel Blood Stasis Tablets should be taken for 6-8 weeks to achieve better therapeutic effect, but the number of days to be taken generally differs according to the patient’s condition. The number of days to use the drug can be adjusted according to the treatment effect, may be shortened or extended, the specific drug to take how many days need to be determined according to the patient’s own situation. It is a Chinese patent medicine, consisting of Astragalus, Salvia, Radix et Rhizoma, Radix et Rhizoma, Radix Angelicae Sinensis, Cinnamon, Rhizoma Atractylodis Macrocephalae, Radix et Rhizoma Bitter, etc. It has the effect of activating blood circulation and relieving pain, softening and dispersing knots, and can be used to treat symptoms such as increased leucorrhea caused by chronic pelvic inflammatory disease.