Is mirena effective past its expiration date?

#723/11 I recently had a lapse in health insurance. During this period, I hit the 5-year mark with my Mirena IUD. read more

The researchers also measured hormone levels in the women's blood and found there was still a sufficient level of hormones to prevent pregnancy, even after the device's expiration date. Weight and body mass index of the patients did not appear to have an impact on the effectiveness of the IUDs or implants. read more

In fact, the study is ongoing to determine whether the IUD and implant remains effective for up to three years beyond their approved use. The study, conducted by the Washington University School of Medicine in St. Louis followed a total of 500 women, all of whom were using an IUD or an implant within six months of their prescribed expiration dates. read more