Birth Control - Intrauterine Device
Intrauterine Devices (IUD)are usually hormone free, however, they have made some with hormones, which strengthen the contraceptive method. The IUD is placed in the uterus and is easily reversible. It scrapes the uterine lining to prevent eggs from implanting. It does not protect against STI/STDs. How Reliable Is It? With perfect use the rate is 99.4% effective. With typical use the rate is 99.2% effective. How Does It Work? The IUD is placed in the uterus by a qualified doctor, it must also be removed by a doctor. You leave this in for as long as you do not want to get pregnant. It can be used for 5 - 10 years. The IUD's are usually copper based and/or hormonal, which would give off progestogen. The IUD is generally shaped like a T, the arms of the T are what holds it in in the upper portion of the uterus. It works through it's very presence, the uterus releases hormones that are hostile to eggs and sperm. The use of copper acts like a spermicide. A hormonal IUD would do the same thing and prevent ovulation. You need to check the string, which comes out of the cervix, every menstrual cycle to ensure it is still in the right place. Side Effects
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