Summary

An intrauterine device (IUD) is a small, T-shaped device that is placed inside the uterus by a healthcare provider to prevent pregnancy. IUDs are one of the most effective forms of reversible birth control and can provide protection for several years, depending on the type. There are two main types: hormonal IUDs, which release a small amount of the progestin levonorgestrel, and the copper IUD, which contains no hormones. Hormonal IUDs work primarily by thickening cervical mucus and thinning the uterine lining, while the copper IUD creates an environment that prevents sperm from fertilizing an egg. Most people can return to fertility quickly after an IUD is removed. Hormonal IUDs often reduce menstrual bleeding and cramping, while the copper IUD may cause heavier periods and increased cramping, especially during the first few months after insertion.

Many patients choose an IUD because it is one of the most effective forms of birth control and provides long-term pregnancy prevention without requiring daily, weekly, or monthly action. Depending on the type, an IUD can last between 3 and 10 years, is easily reversible, and may reduce menstrual bleeding and cramping. For patients seeking a low-maintenance, highly effective contraceptive option, an IUD can be an excellent choice.

A copper IUD (Paragard) is a small, T-shaped device that is placed inside the uterus by a healthcare provider to prevent pregnancy. Unlike hormonal IUDs, it contains no hormones. The copper wrapped around the device creates an environment that is toxic to sperm, preventing them from reaching and fertilizing an egg. It is one of the most effective forms of reversible birth control and can provide protection for up to 10 years. Because it is hormone-free, it is a good option for patients who prefer to avoid hormonal contraception. Some users may experience heavier periods and increased cramping, especially during the first few months after insertion.

Hormonal IUDs do not contain copper. They contain the progestin levonorgestrel and release small amounts of this hormone directly into the uterus over time.

Why a Patient Might Choose This Method

A patient may choose an IUD because it is one of the most effective forms of reversible birth control and requires very little ongoing maintenance. Once inserted, an IUD can provide pregnancy prevention for 3 to 10 years, depending on the type, without the need to remember a daily pill, weekly patch, monthly ring, or regular injections. Hormonal IUDs may also reduce menstrual bleeding and cramping, while the copper IUD offers a hormone-free option. An IUD can be removed at any time if pregnancy is desired, with a rapid return to fertility for most patients.

How It Is Used

An IUD is a small, T-shaped device that is inserted into the uterus by a healthcare provider during an office visit. Once in place, it continuously works to prevent pregnancy for several years, depending on the type selected. No daily, weekly, or monthly action is required by the patient after insertion. Periodic self-checks of the IUD strings may be recommended to ensure the device remains in place. When contraception is no longer desired or the device reaches the end of its approved duration, it can be removed by a healthcare provider, and fertility typically returns quickly after removal.