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Intrauterine device (IUD)

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An intrauterine device (IUD) is a method of birth control that is placed inside the uterus to prevent pregnancy.

All IUDs have a plastic string that extends through the opening of the cervix into the vagina. The string allows a health professional to remove the device at your request or at the end of its effectiveness (usually anywhere from 3 to 12 years, depending on the type). Talk to your doctor about how long you can use it.

The IUD is very effective at preventing pregnancy.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.