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What is an IUD?



An IUD (intrauterine device)—also known as an IUS (intrauterine system)—is a small device that’s placed in a woman’s uterus by a healthcare provider to prevent pregnancy. IUDs are long-lasting, reversible, and one of the most effective birth control methods available at over 99% effective.

There are two types of IUDs in the U.S.—the hormone-free option, Paragard, and several hormonal options.

Learn More About Paragard

What is Paragard? Back to all Questions
  • IUDs, including Paragard, have been associated with an increased risk of pelvic inflammatory disease (PID). Don’t use Paragard if you have a pelvic infection, certain cancers, a copper allergy, Wilson’s disease, or PID. Continue reading
  • If you miss a period, have persistent abdominal pain, or if Paragard comes out, tell your healthcare provider (HCP). If it comes out, use back-up birth control. Continue reading