Expanding Options for Intrauterine Contraception

In the U.S., levonorgestrel IUDs are preferred over copper IUDs for long-term contraception because they reduce menstrual bleeding and cramping. How do these options measure up when used for emergency contraception? To assess the effectiveness of levonorgestrel versus copper IUDs, researchers in Utah conducted a randomized noninferiority study involving 711 women who had unprotected intercourse within 5 days prior to placement of either IUD and who wished to avoid pregnancy for at least 1 year.

Regardless of type of IUD placed, pregnancy rates were low (≤0.3%) and satisfaction was high among all participants.