Progesterone, also known as progesterone, is the progestogen. Progesterone is one of the main biologically active hormones secreted by the ovaries. Estrogen and progesterone have an important role in maintaining normal menstruation and maintaining normal pregnancy in women. Therefore, progesterone can be used to regulate menstruation for many women who have irregular periods or irregular menstruation, and it also has an important role in pre-eclampsia and recurrent miscarriage. However, progesterone is a prescription drug, and if irregular menstruation occurs, some women often choose to use progesterone themselves to regulate their menstruation, but this is a very dangerous situation, and if they use progesterone blindly based on past experience without identifying the specific The causes can produce toxic side effects and greatly increase the risk of gynecological malignancies in serious cases. Although progesterone is a hormone produced by itself, it is wrong to use progesterone for a long period of time. After a long period of drug interference, it disrupts its own hormone levels and further aggravates menstrual irregularities. Progesterone, if used improperly, can also cause discomfort such as nausea, dizziness, fever, insomnia, etc.; it may cause weight gain, water and sodium retention, burnout, and even emotional depression; progesterone promotes breast engorgement and development to prepare for breast production after pregnancy, so some women may have discomfort such as breast swelling and pain; side effects of progesterone also include breakthrough bleeding, abnormal vaginal bleeding, abnormal liver function, etc. Therefore, progesterone should not be taken easily on its own, nor should it be used for a long time. It must be checked at a hospital to determine that there is indeed a lack of progesterone before it is supplemented in the right amount under the guidance of a doctor to avoid unnecessary harm. Progesterone may also cause fetal malformation if taken orally in large doses for a long time during pregnancy.