Dr Jennifer Gunter, September 10 2016 The Mirena intrauterine system (IUS), the IUD with the hormone levonorgestrel, is a highly effective method of contraception currently approved for five years. Some data suggests that it probably good for six years, but a new study tells us with a good degree of confidence that the Mirena is safe and effective for seven years. The study was funded by UNDP/...
Mirena IUD effective for seven years: new study
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