If a person has irregular menstruation with his own deficiency of spleen and kidney, the condition can be improved by taking the above medicines. Those without spleen and kidney deficiency are not recommended to use these drugs. In Chinese medicine, it is believed that the spleen is the organ most closely related to qi and blood biochemistry, while the kidney is the foundation of the innate nature. When the spleen and kidneys are weakened due to prolonged illnesses and other factors, the normal onset of menstruation will be affected, resulting in symptoms such as menstrual irregularities such as scanty menstrual flow, prolonged menstrual cycle and menstrual cramps. In such cases taking herbal formulae that strengthen the spleen and kidney may improve these symptoms. However, if there is no weakness of the spleen and kidneys, it is not recommended to use herbal prescriptions that strengthen the spleen and kidneys and have no effect on menstruation. If there is any discomfort, it is recommended to go to the hospital for treatment under the guidance of a medical professional.