Progesterone is a progestin, which is mainly used to promote menstruation in clinical practice. For example, if menopause occurs and pregnancy is excluded, progesterone can be taken orally to promote menstruation, and most menstruation will occur 3-7 days after stopping the drug. In addition, progesterone can also be used to treat shortened menstrual cycles due to progesterone deficiency or irregular vaginal bleeding in the second half of the menstrual cycle, both of which can be treated with progesterone orally and only under medical supervision. Progesterone may cause dizziness during the process of taking progesterone, especially progesterone pills. It is recommended to take it orally before going to bed to avoid dizziness. It is recommended to take progesterone orally before going to bed to avoid dizziness. You should not stop taking progesterone, as any interruption may lead to irregular vaginal bleeding.