Mirena IUD Side Effects

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Intrauterine devices (IUDs) have become a popular alternative form of birth control. Use of some IUDs are not without risk, however. Over 45,000 accounts of complications linked to using Mirena IUD have been reported to date to the U.S. Food and Drug Administration (FDA).

Some of the possible Mirena IUD side effects and complications are:

  • Embedment: this occurs when Mirena becomes embedded in the uterine tissue (when this happens, the device should be removed, which can be hard to do, and therefore Mirena sometimes has to be removed surgically)
  • Perforation: Mirena might perforate the wall of the uterus or cervix when the health care provider is inserting it. When this happens the device has to be taken out and surgery may be needed to do so. If this is not done promptly, Mirena can cause adhesions, peritonitis (inflammation of the lining of the abdominal cavity and the covering of most of the abdominal organs), perforation of the intestines, obstruction of the intestines, and the erosion of nearby tissue.
  • Expulsion: Mirena may be partially or completely expelled, increasing the chances of pregnancy.
  • Breast cancer: women who currently have or have in the past had breast cancer should not use Mirena.
  • Ectopic pregnancy: this is a pregnancy that occurs outside the womb. It is life-threatening to the mother and fatal to the fetus. It may prevent pregnancy in the future.
  • Dislocation of Mirena
  • Ovarian cysts
  • Infection with Group A streptococcus (this is a rare but serious complication)
  • Pelvic inflammatory disease (this usually occurs within the first 20 days after the device is inserted)
  • Irregular bleeding and cessation of menstrual periods
  • Angioedema (rapid swelling of deep layers of tissue)
  • Migration of the device
  • Vaginal hemorrhage

Pregnancy and Mirena

Women who become pregnant with Mirena IUD in place are at grave risk. If this happens, Mirena must be found and should be taken out by the woman's health care provider. This might end the pregnancy. In addition, the following might occur if the pregnancy continues with the IUD in place:

  • Septic abortion (this would be loss of the fetus in the presence of infection that might lead to shock and death)
  • Miscarriage
  • Dangerous infection
  • Premature labor
  • Premature delivery

The woman should tell her doctor immediately if any of the following symptoms occur — feeling like the flu is coming on, fever, chills, abdominal cramps, pain, bleeding, vaginal discharge or watery seepage.

The possible side effects are very dangerous and can result in serious complications, hospitalization, and in rare cases, death. If you are among the thousands of women who have used Mirena IUD for birth control and you have suffered as a result, contact our Mirena attorneys for help. We may be able to help you recover compensation for your injuries and suffering.


*Mirena® (levonorgestrel-releasing intrauterine system) is a hormone-releasing intrauterine device, manufactured by Bayer. Mirena is a registered trademark of Bayer.

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