There are many ways to prevent unwanted pregnancy, these include birth control pills, IUDs Intrauterine device - how to avoid complications? , Condoms and more. The only "disadvantage" of these methods is that contraception is necessary to take care in advance. As it is not sad, but the percentage of frivolous women who leave the solution to the problem of unwanted pregnancies "for later", is quite high. In this case, it helps prevent pregnancy Postinor as drug belongs to the category of emergency (post-coital) contraception. But before the application of fire contraception must be considered how effective compared to Postinor other contraceptives.

The mechanism of action of Postinor

Postinor refers to drugs used as a means of emergency contraception How do emergency contraception: caution especially . The composition of Postinor includes a synthetic analogue of progesterone levonorgestrel in a dose of 750 micrograms. The package contains two tablets. The first tablet of the drug need to drink within three days after unprotected intercourse, and the second twelve (but no later than sixteen hours) after the first dose.

Postinor has a contraceptive, progestin and anti-estrogenic effects. The mechanism of action of the drug is as follows:

• reception on the eve of ovulation Postinor inhibits the release of the egg, that is, blocks ovulation Ovulation - How to determine as accurately as possible? ;
• Postinor reception took place after ovulation causes changes in the lining of the uterus that leads to the impossibility of implantation of a fertilized egg;
• drug causes cervical mucus changes, it becomes thicker, whereby the penetration of sperm into the uterus difficult;
• Postinor violates the promotion of egg fallopian tube into the uterus.

Efficacy

Primarily Postinor efficiency depends on the adoption of the first tablet. That is, what used to be drunk the first dose, the higher the contraceptive effect. In total, the contraceptive effect of the drug is in 85 percent of cases of unprotected intercourse. According to some reports, it is not desirable Postinor prevents pregnancy in 98 percent of women.

Secondly contraceptive effect of the drug is dependent on observance of the rules of admission. It is important to calculate the time of the adoption of the second pill and drink it in a timely manner. The gap between the first and second doses of pills should be exactly twelve hours (at least, no more than sixteen). It should be borne in mind that the lengthening of the period between doses reduces the possibility of preventing unwanted pregnancy.

Thirdly, it is important to remember that taking Postinor is only an emergency measure to prevent pregnancy, and its frequent use is not allowed, since the drug is not only a serious violation of the menstrual cycle Menstrual cycle and its characteristics But also reduces its efficiency. Therefore Postinor allowed to take no more than three times a year.

Additionally, the contraceptive effect of the drug depends on the presence of chronic diseases of the gastrointestinal tract (gastritis, enterocolitis, liver disease). Chronic processes in the gastrointestinal tract cause malabsorption of nutrients and medicaments, including Postinor, thereby reducing its effectiveness.

Often the drug is accompanied by severe side effects, such as vomiting. Vomiting also affects the efficacy of the drug as a high probability that the tablet has not yet had time to be absorbed. If vomiting occurs, immediately consult a doctor for taking a decision on the future of Postinor. To avoid these side effects, it is recommended to take the tablets after meals, drinking plenty of water.

In the case of taking the first pill within twenty-four hours, the contraceptive effect of up to 95 percent. Later the drug (48-72 hours) causes its contraceptive effect in 58 percent of cases.

Postinor and other drugs

Simultaneous reception Postinor with certain medications reduces its effectiveness. These include barbiturates, rifampicin, fenition, carbamazepine, ritonavir, grizeofulfin, rifabutin, St. John's wort preparations.

Anna Sozinova

  Hormonal contraceptives in this age, the age of pregnancy planning are an indispensable tool. Modern hormones reliably protect women from unwanted pregnancy. However, hormonal contraceptives are good only when one partner is a woman, as they do not protect against sexually transmitted infections by. Another negative (and maybe that's a plus?) - They demand punctuality in the application.

Hormonal birth control

Today hormonal contraceptives - our everyday life. But it was not always. These drugs come into our lives only in the 60s of the last century and the first is not in perfect form. Echoes of the negative myths that remain after the use of hormonal contraceptives first came to our time, and now they sometimes maintain a negative attitude to these drugs despite the fact that the already created a new generation of hormones that do not cause any long-term changes in a woman's body.

Hormonal contraceptives contain synthetic hormones to artificially close in quality to the natural female sex hormones - estrogen Estrogen - the key to bone health   and progesterone. They allow you to artificially prevent oocyte maturation and ovulation Ovulation - How to determine as accurately as possible?   (release of an egg from the ovary), and thus pregnancy.

What are the hormonal contraceptives

Various pharmaceutical companies produce different types of hormones. For hormonal contraceptives may be single component or a combination thereof.

One component contraceptives contain one type of hormones and are tablets, each of which contains the same dosage of hormones, so that all these hormones are monophasic. Combination hormonal contraceptives contain two types of hormones. These hormones can have both the same and different doses (mono-, two- and three-phase).

Female sex hormones introduced into the body in large amounts, delayed maturation of follicles and ovulation and mucus in the cervical canal give viscosity - it becomes impenetrable to sperm. Hormones - a highly active substances that are already in small concentrations, so their use requires accuracy, neither one tablet should not be missed, or not be guaranteed contraception. Receiving one component of hormonal contraceptives is allowed to hold only 3 hours, combined - 12.

What Mersilon

Mersilon - a monophasic combined hormonal contraceptive product for oral administration. It contains two hormones desogestrel (analogue of progesterone) and ethinyl estradiol (an estrogen analogue). Its mechanism of action is based on inhibition of follicle development and abuse of the process of ovulation. The contraceptive effect is enhanced by the effects on the cervical (cervical) mucus, which hinders the penetration of sperm into the uterus, and endometrial changes that prevent the consolidation of the egg in the uterus.

How to take Mersilon

Assign product from the first day of menstruation, one tablet daily at the same time for 21 days, followed by a seven-day break, during which the drug is not taken. During this time must occur menstrualnopodobnoe bleeding. Admission to each successive package should begin at the end of the seven-day tablet-free interval.

After an abortion, the drug is recommended to start on the same day. After birth, it can begin to take 21 days, if a woman does not breastfeed. If a woman starts taking the drug later dtsadtsat the eighth day after birth, the pregnancy must be excluded and additionally use a barrier method of contraception for seven days.

Side effects Mersilon

Mersilon can sometimes cause a number of side effects:

• on the part of the reproductive system: intermenstrual spotting Spotting - it is important to rule out pathology Changes in the cervical secretion, bloating, pain, secretion of the mammary glands;
• From the digestive system: nausea, vomiting;
• the nervous system: headache, migraine, mood changes;
• From a metabolism: fluid retention, changes in body weight;

Other: sometimes - rash, reduced tolerance to contact lenses, increasing the risk of thromboembolism.

Contraindications for use Mersilon

Contraindications of hormonal contraceptives are:

• pregnancy;
• coronary heart disease, myocardial infarction, hypertension, cerebrovascular accident (even in the past), valvular heart disease;
• deep vein thrombosis;
• Breastfeeding - the first 6-8 weeks after birth;
• mammary cancer;
• diabetes complicated by vascular disorders;
• vaginal bleeding of unknown nature;
• acute viral hepatitis Hepatitis - the scourge of our time , Cirrhosis, liver cancer;
• Migraine accompanied by neurological symptoms;
• hypersensitivity to the drug.

The drug is not prescribed to women smokers over 35 years old.

  Galina Romanenko