Inclusion criteria:
Entry criteria: written consent to participate in the study, being Iranian, reading and writing, mother's age range between 15-50, desire to have natural childbirth, cephalic presentation, singleton pregnancy,
Term pregnancy (38 to 42 full weeks based on LMP or first trimester ultrasound)
Obtaining a score equal to or greater than 10% of the nemogram is the prevention of postpartum hemorrhage
Exclusion criteria:
Exclusion criteria include: allergy to yarrow, unwillingness to continue participating in the study, cesarean delivery, history of uterine surgery, use of herbal or chemical drugs before delivery and during labor and delivery.
The occurrence of serious complications after childbirth (higher temperature equal to 38 degrees Celsius and higher blood pressure equal to 140/90) contracting a medical disease
Heavy bleeding during childbirth, 3rd and 4th degree tears, uterine and cervical tears, use of epidural anesthesia, shoulder dystocia, decollement, require invasive measures or drugs.