Postinor is a hormonal post-coital contraceptive. It must be taken according to a certain scheme and only for a limited time period.
Postinor is an emergency contraception that helps prevent unwanted pregnancies. When used correctly, the effectiveness of this drug is over 90%. Like other hormonal contraceptives, Postinor should be taken only after consulting a doctor.
How Postinor works
The active ingredient of this drug is levonorgestrel, a synthetic analogue of progesterone - the hormone of the corpus luteum. Levonorgestrel is also included in the composition of drugs for planned contraception, but in Postinor its content is much higher. A "shock" dose of levonorgestrel is necessary to create hormonal levels unfavorable for pregnancy in a woman's body.
Doctors recommend taking Postinor no more than twice a year. With a regular intimate life, you need to choose another contraceptive.
Depending on the period of the menstrual cycle, "Postinor" was taken, it acts in different ways:
- prevents the release of the egg by reducing the patency of the fallopian tubes;
- changes the structure of the endothelium (inner layer) of the uterus and thereby prevents fertilization or the introduction of a fertilized egg.
Postinor does not affect an already fertilized and implanted egg. It is useless to take it to terminate the onset of pregnancy, since this drug does not have an abortive effect. On the other hand, Postinor will not affect the fetus if it is decided to keep the pregnancy.
Features of the reception "Postinor"
The standard package of Postinor contains two tablets, which must be taken one after the other at intervals of 12 hours. The first pill must be drunk as soon as possible after unprotected intercourse - best of all in the first 12-24 hours, then the effect of the drug will be as effective as possible. The maximum period during which it makes sense to use the drug is 72 hours. It is important to remember that Postinor will have no effect if, after taking it, the woman again had unprotected intimate contact. Also, the drug cannot prevent infection with sexually transmitted diseases.
It is best to take the tablet immediately after a meal. Thus, you can reduce the risk of side effects - vomiting and nausea, which are often observed after taking Postinor. Sometimes the drug causes dizziness, weakness, headache, swelling of the mammary glands. Scanty short intermenstrual bleeding is also not uncommon.
If vomiting begins within two hours after taking Postinor, the drug will not have time to be absorbed in the gastrointestinal tract. Therefore, you need to take another pill.
After the use of "Postinor" the next menstruation begins in a woman at the usual time or a few days ahead of schedule. In case of a delay in menstruation for a week or more, you need to consult a doctor, because even after taking the drug, pregnancy is still possible.
There are a number of contraindications for taking Postinor. This remedy should not be used by women with diseases of the liver and gallbladder, varicose veins and other disorders of venous circulation.