Posterior pituitary hormone injection can promote the contraction of blood vessels and uterine smooth muscle, which can be used for the treatment of respiratory and gastrointestinal hemorrhage as well as obstetrics to induce labor. Postpituitary hormone injection has a strong contraction effect on smooth muscle, especially blood vessels and uterine myometrium, so it is commonly used in the treatment of pulmonary and bronchial hemorrhage such as hemoptysis, gastrointestinal hemorrhage such as hematemesis and vomiting, and can also be used in obstetrics to hasten labor, and postpartum to promote uterine contraction so as to stop hemorrhage. Postpituitary hormone is prohibited in patients with myocarditis, vascular sclerosis, moderate-to-severe renal insufficiency; prohibited in labor induction in women with history of cesarean section, pelvic stenosis, twin fetuses, obstruction of the birth canal, and the uterine mouth is not fully opened, and so on. The use of posterior pituitary hormone injection may cause abdominal pain, diarrhea, increased blood pressure, palpitations (rapid heartbeat, often accompanied by panic), headache, irritability and other adverse reactions. This product is usually used in hospitals by healthcare professionals. If you feel unwell, feedback to your doctor promptly.