There are many methods of contraception to prevent pregnancy, but not all are safe for women. In many cases it depends on the maintenance of treatment by the woman.
Among the contraceptives that guarantee safety above 99% are the pills, the vaginal ring, the patches, the contraceptive injection and the subdermal cannula. These leave out barrier methods, such as condoms, in which effectiveness depends on how the condom is put on.
Pills, patches, and injections
Contraceptive pills, in addition to preventing pregnancy, also provide solutions to painful periods, acne, and ovarian cysts. They are used for cases of anemia and benign pathologies in the breasts.
The pills are 99.7% effective, as long as the times and days of the doses are respected. The oral contraceptive is ingested for 21 consecutive days at the same time and rests for 7 days for menstruation to occur. Then it is resumed and thus the cycle is maintained, until the woman who decides to get pregnant stops taking them.
The patches are an adhesive band that is applied on the same day of the week, for 21 days. You stop using it for 7 days, like the pill, because they are hormonal treatments. The difference is that the patches are absorbed through the skin to avoid getting pregnant. They are 99.7% efficient.
Birth control injections use the hormone progestin, which stops ovulation. It does not use estrogen, so it is an alternative for women who are breastfeeding their babies, or who cannot receive estrogen.
Contraceptive injections are given every 3 months and equal the rest with 99.7% effectiveness. One of the biggest advantages is that, in the case of diarrhea or vomiting, its effectiveness is not reduced.
Vaginal ring and subdermal contraceptive
The vaginal ring is a small plastic ring that is placed inside the vagina for 3 weeks. It measures about 5 centimeters and releases hormones in small amounts, just like the pill, only in this case it is the vaginal mucosa that absorbs the doses. After 3 weeks, the ring should be removed at the time of menstruation. It is 99.7% effective and very convenient to wear and remove.
Subdermal cannula placement is another way to prevent pregnancy. Of all the above, it is the one that offers the longest-term protection, protecting women for 3 to 5 years. It consists of inserting a very small rod under the skin, which continuously releases progestogens (not steroids).
As it does not reach the muscle, it is not a method that causes pain when the doctor places it. Its effectiveness rate is 99%.
All these contraceptive methods only prevent pregnancy and do not prevent acquiring sexually transmitted diseases such as HIV, which could be prevented by the use of condoms.
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