As we all know, contraceptives are divided into long-acting contraceptives, short-acting contraceptives and emergency contraceptives, and short-acting contraceptives are arguably the “most reliable” one of the three, do not believe it? I’ll tell you about it. The short-acting oral contraceptive pill, there is a foreign name abbreviation – “COC”. It is composed of a certain percentage of synthetic estrogen and progestin. The so-called “short-acting”, as the name implies, means that the effect of contraception is very short, lasting at most one day, so oral short-acting contraceptive pills must be taken one pill a day. A box of short-acting contraceptive pills usually contains 21 tablets, take one tablet every day for 21 days, the month’s contraception can achieve satisfactory results. Compared to long-acting and emergency contraceptives, short-acting pills contain much less progestin and estrogen, so they have a high contraceptive rate while minimizing harm to the body. In addition, in some ways, short-acting pills have several other benefits. Yes, you heard it right, the benefits! 1, adjust the menstrual cycle Short-acting contraceptive pills contain highly effective estrogen and progestin combination, the reason why women have regular menstruation is that her endocrine system will secrete estrogen and progestin at a certain time, which determines that short-acting contraceptive pills will have a role in adjusting the menstrual cycle. 2, treatment of endometriosis Endometriosis occurs in women of childbearing age, benign disease malignant behavior, progressive aggravation of dysmenorrhea makes the patient very painful. Current treatment is most effective if surgery is indicated, with preoperative and postoperative adjunctive medication. Such diseases have estrogen dependence, and short-acting contraceptives are the first hormonal drugs used for the treatment of endometriosis, long-term continuous use to inhibit estrogen secretion caused by artificial amenorrhea, for patients with mild endometriosis, the efficacy is obvious, the efficiency is also very high. 3.Application after abortion Regular oral administration immediately after abortion can reduce intrauterine residues, significantly shorten the time of vaginal bleeding and make the first postoperative menstruation come on time. Another contraceptive principle of short-acting contraceptive pills is also perfectly applied: progestin makes the cervix form mucus, prevents the relatively open uterine opening after pessary blockage surgery from being invaded by bacteria, avoids infection, and can reduce the recent and long-term complications of abortion. 4.Treatment of polycystic ovary syndrome Polycystic ovary syndrome is very common clinically and is one of the main causes of menstrual irregularities and infertility. The main symptoms are: scanty menstruation, Kaohsiung, infertility and related blood lipid and blood sugar endocrine abnormal symptoms, etc. The ingredients contained in the available short-acting contraceptives can effectively play the role of anti-androgen. 5, improve premenstrual syndrome Menstruation is a symbol of women, but once a month the tide may also bring pain and distress to many people, PMS is a group of syndromes that occur periodically before menstruation, such as edema, fat, poor mental state in all aspects, and even headaches, back pain, etc.. In addition there will be individual women who experience sleepiness, overeating and anxiety. Those with milder symptoms can intervene by changing their lifestyle and regulating their diet, and medication can be used when the effect is not good. The same short-acting contraceptive pills contain related components have a direct inhibitory effect on the central nervous system, and similar to progesterone in terms of anti-salt corticosteroid and anti-androgen effects, improve premenstrual syndrome has obvious efficacy. 6, endometrial polyp removal post-operative treatment Endometrial polyps are very common in clinical practice and can cause irregular bleeding, in addition to the possibility of malignant transformation, which is caused by local endometrial overgrowth, and its formation is also closely related to high estrogen levels. Currently, the first choice of treatment is hysteroscopic surgical curettage, but postoperative vaginal bleeding and recurrence are common, and this is where the “all-purpose” short-acting contraceptive pill comes in. References: [1] Wang Wenrong. Contraceptive pills [J]. Chinese Family Planning. 2011(5):293