Intrauterine Device

Intrauterine Device / IUD Birth Control

An IUD is a small, T-shaped device inserted into the uterus by a doctor. IUDs are highly effective forms of birth control and may contain hormones or copper.

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Birth Control

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Understanding IUDs

What Is an IUD?

An IUD is a small, T-shaped plastic device that is wrapped in copper or contains hormones. The IUD is inserted into the uterus by a doctor. A plastic string tied to the end of the IUD hangs down through the cervix into the vagina. This string can be used to check that the IUD is in place and is also used by the doctor to remove the IUD.

The source page describes two types of IUDs: hormonal IUDs and copper IUDs. A hormonal IUD releases levonorgestrel, a form of progestin, and is effective for at least 5 years. A copper IUD can stay in place for at least 10 years and is a highly effective form of contraception.

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How IUDs Work

How IUDs Work and What to Expect

Both types of IUD prevent fertilization of the egg by damaging or killing sperm. The IUD also affects the uterine lining, where a fertilized egg would implant and grow. A hormonal IUD makes cervical mucus thick and sticky so sperm cannot get through to the uterus, and it also keeps the uterine lining from growing very thick. Copper is toxic to sperm and causes the uterus and fallopian tubes to produce fluid that kills sperm.

An IUD can be inserted at any time as long as the patient is not pregnant. The procedure takes only a few minutes and can be done in a doctor’s office. After insertion, mild cramping and light bleeding or spotting may occur for 1 or 2 days. The doctor may want to see the patient 4 to 6 weeks after insertion to make sure the IUD is in place.

Common Questions

Frequently Asked Questions

What types of IUDs are described on the source page?

The source page describes hormonal IUDs and copper IUDs.

How long can an IUD last?

The source page states that a hormonal IUD is effective for at least 5 years, while a copper IUD can stay in place for at least 10 years.

How is an IUD inserted?

An IUD is inserted into the uterus by a doctor. The insertion procedure takes only a few minutes and can be done in a doctor’s office.

What can happen after IUD insertion?

Some patients may experience mild cramping and light bleeding or spotting for 1 or 2 days.

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