What is the efficacy of intrauterine devices (IUDS) for contraception?

Updated: Oct 06, 2020
  • Author: Frances E Casey, MD, MPH; Chief Editor: Richard Scott Lucidi, MD, FACOG  more...
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The failure rate is 0.6% with the Copper T380, and 0.1 % with LNG-IUS. The percent of women who continue to use these forms of contraception is high after 1 year of use, 88% and 84% with LNG-IUS and Copper T380, respectively.

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