Taking progesterone before going to bed is mainly to avoid and minimize the occurrence of adverse reactions such as dizziness, headache, dizziness, nausea, vomiting, etc. It is not necessary to take it during this time period, and it is sufficient to be able to take the medication regularly without skipping any dose to maintain the hormone level in the body at a stable level. In addition to oral intake, you can take intravaginal administration to alleviate the related side effects. Progesterone is a progestin drug that can be used to treat a variety of common gynecological disorders, such as premenstrual syndrome, irregular menstruation, habitual abortion, luteal insufficiency, resulting in miscarriage, dysmenorrhea, anovulatory dysmenorrhea, amenorrhea, and so on. Be sure to follow the doctor’s instructions for rational use, not recommended to blindly increase the dose by yourself or stop taking it at will, if it is used to induce menstruation, usually about 3-5 days after stopping the drug, withdrawal bleeding, that is, the onset of menstruation.