When progesterone capsules are used to regulate menstruation they are often taken orally for 5-7 days prior to menstruation, 2 capsules (100mg) each time, twice daily. When progesterone capsules, as a natural progestin, are used to regulate the menstrual cycle, patients are usually advised to take progesterone capsules, 100mg each time, once in the morning and once in the evening, for 5-7 days in the second half of the menstrual period. Menstruation will come within 3-7 days after stopping the medication, but except for abnormal liver function and early pregnancy. Dizziness and drowsiness may occur after taking progesterone. In addition, it should be used with caution for patients with liver or kidney insufficiency, heart disease, high blood pressure, and so on. If irregular menstruation occurs, it is recommended to go to the gynecology clinic in time and use the medication under the guidance of a professional doctor, do not use the medication privately to avoid serious adverse reactions.