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<p>Findings from a recent analysis of data from a large, multi-country study of women using levonorgestrel or copper intrauterine devices (IUDs) indicate that while both forms of contraception have high levels of efficacy, the levonorgestrel device daily releasing 20 mcg (Mirena LNG IUD, Bayer Healthcare Pharmaceuticals, Wayne, NJ) was associated with a significantly lower risk of pregnancy, including ectopic pregnancy, than copper IUDs.<span class="CharOverride-1"><sup>1</sup></span></p>

Data reaffirm the effectiveness of LNG, copper intrauterine devices

20-mcg LNG IUD associated with lower risk of pregnancy