Progesterone can be bought in pharmacies, but progesterone is a kind of progestin, a prescription drug, so patients must first go to the hospital and get a prescription from the doctor before they can take out the drug in pharmacies. Because progesterone can cause damage to the patient’s body while treating the disease, for example, it can damage a woman’s liver and kidney function, it can cause abnormal blood clotting and the formation of blood clots, it can disrupt a woman’s endocrine secretion, and it can affect the fetus. Therefore, the patient must check the liver and kidney function as well as the coagulation function to exclude pregnancy before use. It is also important to check the patient’s blood regularly during the use of progesterone to exclude the drug from causing damage to the patient’s body, and to stop using progesterone immediately after the patient becomes pregnant.