Extreme Contraception
Despite of the name, tablets « On the following morning» can be accepted morning within 72 hours after sex without protection. Tablets are accepted two times, with a break in twelve hours, and contain the big doze of a complex of progesterone and an estrogen. High concentration of hormones protects from pregnancy one of two ways: if ovulation has not taken place yet tablets "brake" development egg (and it means, that the time because ovulation can begin later is necessary to be extremely cautious in stayed prior to the beginning of next monthly). And if ovulation has already taken place, hormones do not allow impregnated egg to be fixed on a uterus and, thus, to continue development. Some women feel indispositions after reception of this preparation, therefore it is recommended to accept simultaneously tablets from nausea. If it became bad within two hours after reception of tablets, probably, your organism has not acquired hormones, and you should accept a preparation again. Unhealthy sensations in dairy irons, a headache and a small bleeding can appear also. But these symptoms, as a rule, pass in two days and treatment isn't necessary.
The Caused Abortion
Abortion can be made by surgical intervention. In the first trimester is an abortion of aspiration suction, in the second trimester this expansion and evacuation. At chemical abortion uses preparations for interruption of pregnancy. This method is desirable for using at pregnancy less than 7 weeks though its deadline is 9 weeks. In case term already the greater, can use prostaglandins to cause premature delivery. Up to an induction the injection can be used to stop embryo’s heart.
The national medicine believes that there are some grasses which cause abortion (abortifacients). Though scientifically it is not proved and not documentary anywhere.
Experimental Contraceptives for Men
In press frequently there are applications that contraceptive tablets for men in the near future will appear. But, unfortunately, effective means yet have not developed. All the matter is that it is much easier to check fertilisation of one egg in a month, than 50 thousand sperm in one minute which ripened within three months. Now in a stage of development there is a technique (still only experimental) man's contraception which consists in weekly injections of testosterone. If researches will pass successfully this method will consist in injections of times in three months or in implantation of an implant (like "Norplant"). Scientists also work above implants with use "Depo Provera", and in case of success they become accessible in three years. Complexity consists that many methods of contraception influence a hypophysis that can lead to impotence.
RISUG (Reversible Inhibition of Sperm Under Guidance) is an injection in a vessel deferens which covers walls of a vessel with spermicidal substance. But this method can be completely changed with the second injection, washing off a vessel deferens.
In development a calendar method for men where contraception is based on high temperature of heating eggs during the short period of time when appear sperm.
Efficiency
The most effective methods in use are those, which do not depend on their correct use and time. Surgical sterilization and intrauterine devices (IUDs) have degree of risk less than 1 % one year.
Other methods can be very effective under condition of their correct and exact use, but are more risky of that you used them not in accuracy with the instruction. Methods of understanding of abundance and ecological feeding by a breast have a degree of risk less one of 1 %. Norms of failure is less than 1 % in a year. Hormonal preparations at correct use have small risk but if to overlook to accept a tablet the risk repeatedly increases (approximately 8 % in a year at observance of rules). The theoretical degree of risk of periodic methods of abstention makes from 2 up to 5 %, but actually is much above, and can reach 25 %.
The degree of risk at use of condoms changes from 1 up to 60 % because all depends on how frequently and correctly you used them. Correct use of a qualitative condom more effectively, than a cervical cap (2 %-s' failure against 6 %), and condoms have a side benefit, they can prevent distribution of the illnesses transmitted in the sexual way such as a HIV. The interrupted sexual act, or, in other words, a method of withdrawal if it is used consistently and correctly, has 4 % a degree of risk. This way demands the big self-checking and the certain efforts on the part of the man and consequently the opportunity of failure rises up to 27 %, except for that this method is not recommended by medical professionals.
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