Since ancient times used for contraception barrier means.Today, they are represented as male and female condoms, vaginal diaphragm (pessary), cervical cap, contraceptive sponges.The general principle of action is that they hinder the penetration of sperm to the cervix.Obvious advantages of barrier contraceptives - is their accessibility, absence of contraindications and side effects, as well as protection against sexually transmitted diseases (STDs).However, their use is undesirable for latex allergy or polyurethane, and is also associated with the risk of damaging the product, resulting in the contraceptive effect will be zero.

addition to the barrier, as well as independent contraceptives can be used chemical contraception - spermicides, spermicides and prevent their infiltration into the uterus.Spermicides are av
ailable in various medicinal forms: pills, creams, gels, sprays, foam, foaming and melting candle.Apart from the fact that chemical contraceptives protect against certain STD special advantages of this method have, on the contrary, it may cause some inconvenience and cause unpleasant sensations in both partners.

popular means of protection from unwanted pregnancy is intrauterine device (IUD) - introduced into the uterus of a loop twisted into a ring of plastic threads with copper, silver or hormones.The spiral is set for the long term (5-10 years), it can be used during lactation, she does not deliver inconveniences and allows you not to think about contraception at all.However, use of the IUD can cause a number of complications: pain in the lower abdomen, vaginal bleeding, changes in menstrual bleeding patterns, the possible inflammatory diseases of the pelvic organs, and if not installed - perforations (rupture of the wall) of the uterus.You should also remember that the spiral has an abortive effect, ie prevents implantation of a fertilized egg into the uterus, in other words, to provoke miscarriage in early pregnancy.

For highly effective means of preventing unwanted pregnancy are hormonal contraceptives.Their mechanism of action is to suppress the generation of their own ovarian hormones (estrogen and progestogen) and the substitution of their synthetic counterparts.Hormonal contraceptives are presented combined estrogensoderjath drugs in pill, mini-pill, post-coital means for emergency contraception after unprotected sex, long-acting injections of hormones (1-5 months), subcutaneous implants that provide protection against pregnancy for 5 years, vaginal rings 1-3 menstrual cycle.Hormones have many contraindications and have different side effects, so when choosing a medical consultation is required.

choosing a means of birth control, it is necessary to take into account not only their performance, but also the feasibility of.Thus, in a regular sexual life with one permanent partner, you can use a spiral or oral contraceptives, and with infrequent sexual intercourse - barrier and chemical weapons, and providing protection against diseases transmitted through sexual contact.