FDA Approves Bayer Mirena sNDA

FDA has approved an sNDA for Bayer’s Mirena (levonorgestrel-releasing intrauterine system) for extended use as a contraceptive for up to eight years. The device had been approved as a contraceptive for up to seven years, Bayer says.

The approval was based on data from the Phase III Mirena Extension Trial that evaluated the efficacy of Mirena during extended use beyond five years. The study included 362 women aged 18 to 35 years who had been using Mirena for not less than 4.5 years and not more than five years at enrollment. The company says the IUD was well-tolerated with no new or unexpected safety findings and demonstrated contraceptive efficacy greater than 99% during years 6-8 of use.

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