If you want to induce menstruation you can usually take progesterone for 3 days. 1 time a day 1 time to take two capsules. Because progesterone may cause dizziness, it must be taken orally before going to bed. And it is important to note that patients with a history of progesterone allergy are not allowed to take progesterone orally and must take it for 3 consecutive days without interruption during the course of the medication. If interrupted, it will not only fail to achieve the clinical purpose of inducing menstruation, but may also cause irregular vaginal bleeding. It is also recommended that for women with menopause, if they have a history of sexual intercourse, they should first rule out the possibility of pregnancy, and only take progesterone orally to induce menstruation if they have a urine HCG test or a blood HCG test (-), and if they do not have a period 8 days after stopping the medication, they must go to the hospital for the appropriate examination.