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The article was professionally consulted by Specialist Doctor I Pham Thi Yen - Obstetrician - Obstetrics and Gynecology - Vinmec Hai Phong International General Hospital.Emergency contraceptive pills contain high levels of female hormones, have the effect of inhibiting ovulation, thickening cervical mucus, preventing sperm from moving into the uterine cavity, inhibiting the growth of endometrium. uterine lining. The effectiveness of the emergency contraceptive pill is said to be quite effective if used correctly and in the right dose as directed.
1. Emergency contraceptive pill type 1 pill
Single-pill emergency contraception is a type of pill that only needs to be taken in a single dose.For emergency contraceptive pills, 1 tablet containing 1.5mg Levonorgestrel is recommended to be used as soon as possible and up to 72 hours after unprotected sex. If taken within the first 24 hours, the effectiveness of contraception is 95%, from the next 25-48 hours, the effectiveness of contraception decreases to 85% and from 49-72 hours, the effectiveness of contraception is only 58%.
For emergency contraceptive pills 1 tablet containing Mifepristone ingredient, 10mg content, it is recommended to use as soon as possible to achieve the highest effectiveness and maximum within 120 hours after sexual intercourse.
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2. Emergency contraceptive pill type 2
The two-pill emergency contraceptive pill contains 0.75mg of Levonorgestrel each. The first pill should be taken as soon as possible, not later than 72 hours and the second pill should be taken 12 hours after the first pill (not later than 16 hours). It is necessary to take 2 pills to prevent pregnancy.Users must note what kind of emergency medicine they use (1 tablet or 2 tablets) to use according to instructions.
Thuốc tránh thai khẩn cấp loại 2 viên
3. Some notes when using emergency contraceptive pills
Do not use emergency contraception more than 2 times in 1 month and 3 times in 1 year to avoid affecting fertility. If vomiting occurs after taking the drug, if this occurs less than 2 hours after taking the drug, then another dose must be taken to make up for it. Some unwanted effects when using the drug include nausea, headache, breast tenderness, menstrual cycle disturbances ... Emergency contraceptives do not work when the pregnancy has formed. Your period will start in the next month, if you don't see your period, you need to take a test to see if you are pregnant or not. Taking multiple emergency contraceptive pills does not increase your chances of getting pregnant, just take enough and exactly as directed.
Chị em có thể gặp triệu chứng nhức đầu sau khi dùng thuốc
4. In what cases should emergency contraception be used with caution?
Situations when emergency contraception should not be used:People who are pregnant or suspected of being pregnant Unexplained abnormal vaginal bleeding People with a history of thrombophlebitis or thrombosis In cases where emergency contraception should be used with caution:
People with diabetes People with a history of cerebrovascular disorders People with epilepsy, heart disease In short, emergency contraceptive pills type 1 or 2 Tablets differ mainly in the way they are used. You need to know carefully to use the right medicine to achieve the highest effectiveness of contraception.
Doctor Pham Thi Yen has 11 years of experience in examination and treatment in the field of Obstetrics and Gynecology. Doctor with strengths and deep understanding in:
Examination and consultation of normal pregnancies, pathological pregnancies, high-risk pregnancies Examination and treatment of gynecological diseases: cervicitis, cervical ectropion Surgery Laparoscopic surgery for gynecological diseases: ectopic pregnancy, uterine tumor, ovarian tumor Surgery for breast, vulvar, vaginal, cervical tumors Obstetric surgery: cesarean section, examination and treatment of endocrine disorders in women of all ages: puberty, reproductive age; perimenopausal age.
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