- 1 hormonal and non-hormonal means: what is the difference
- 2 What factors must be considered when selecting
- 3 How often can I use drugs to prevent unwanted pregnancies
- 4 How do you know that the drug acted
- 5 Side effects and complications when taking
- 6 What else should be considered when taking
hormonal and non-hormonal means: what is the difference
Until recently, in order to preventunwanted pregnancies used only hormonal emergency contraception.Preparations were different trade names, but it is composed of the same active ingredient - a hormone levonorgesterl.The dose was 1.5 mg, only some formulations it was divided into two pills contained in the other one.The principle of action of drugs was based on the fact that a large dose of the hormone, which is greater than 150 times the amount contained in the preparations for the planned contraceptive (combined oral contraceptives), temporarily impair the operation of those parts of the brain that are responsible for the regulation of the reproductive organs (uterus, fallopian tubes and ovaries).Due to this, there is suppression of ovulation, if it has not occurred, or changing the uterine lining (endometrium), if it has already taken place.In essence, use of these drugs is a hormonal shock to the body, due to which provided the contraceptive effect.
Recently, however, there were also non-hormonal agents that have a fundamentally different mechanism of action.They temporarily block certain receptors in the form of the relevant bodies - the ovaries, uterus, fallopian tubes.Due to this, slowing the maturation of follicles, ovulation is inhibited (by an average of 4 days) and changing the structure of the endometrium (the inner wall of the uterus).Due to this influence the probability of an unwanted pregnancy is also drastically reduced.In this case the funds do not have an impact on centers of the brain, and the body does not experience such hormonal shock.But these various groups of drugs have a number of common features.Thus, they are used only after unprotected exposure and effective within 72 hours thereafter.
What factors must be considered when selecting
Efficiency absolutely all means of emergency contraception is not constant.It depends on many factors, but this dependence for different drugs are not the same.When choosing a product to be considered parameters such as body weight women, the phase of the menstrual cycle, the time elapsed since unprotected contact.For example, if overweight effectiveness of hormonal drugs is reduced by 2 times, and nonhormonal not changed.With obesity and reliability of those other funds falls - from hormones in 4,5 times, in negormonov - 2.5 times.
How often can I use drugs to prevent unwanted pregnancies
basic principle for any emergency contraception - the less the better.In any case, these drugs can not be used for each protected contact and replace them planned contraception.The instructions to the certain drug is indicated, it is not recommended to apply them on a monthly basis, others twice a month.
How do you know that the drug acted
Some women mistakenly believe that spotting after taking some drugs are proof that the drug worked.However, this view is fundamentally mistaken.Spotting is a complication, and are classified as violations of the menstrual cycle.The drug was well tolerated and with minimal side effects did not have an impact on women's health.Any subjective sensations, such as nausea, vomiting, headache, acyclic bleeding, lower abdominal pain, irregular menstruation, breast tenderness, are the side effects, but not the evidence of the reliability of the selected funds.
Side effects and complications when taking
about side effects already described in the preceding paragraph, so individually worth looking at complications.One of the most frequent complications of a menstrual cycle.In most cases, the menstrual cycle is restored independently and does not require additional drug adjustments.However, there are situations in which need more therapy.For example, use of oral contraceptives for 2 - 3 months.We should not forget that combined oral contraceptives have a rebound effect, that is, when the abolition of the chance of pregnancy increases.For this reason, the use of routine contraception as necessary.
Another serious complication is an ectopic pregnancy.Such a possibility exists, and without the use of any drug for emergency contraception.However, hormonal slow advancement of the fertilized egg into the fallopian tube, and non-hormonal, on the contrary, accelerate.In this way, the likelihood of tubal (ectopic) pregnancy by using more modern non-hormonal drugs 2 times lower.
What else should be considered when taking
should not forget about drug interactions.Some medicines may reduce the effectiveness of funds for emergency contraception.Therefore, before applying you should read carefully the instructions for use of the drug purchased.
There are situations when it is necessary in the preparations for the prevention of unintended pregnancies among women who at this moment are breastfeeding.Since the drugs are capable of penetrating into the breast milk, breast-feeding after receiving funds have to interrupt for a while.
In any, case, will be useful to obtain complete information on this issue, to be sure of the correct choice.