Patient information leaflet and Adverse event reporting information can be found at the bottom of the page​

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You've been prescribed Mirena, what now?

With the support of your healthcare professional you have chosen Mirena, a small intrauterine system (IUS) that sits in your womb and may have been prescribed to you for one or more of the following: 

  • To prevent pregnancy for up to 8 years.

  • Treat Heavy menstrual bleeding (HMB) for up to 5 years.

  • To be used as part of hormone replacement therapy (HRT) for up to 4 years. 

If symptoms do not return after 5 years of use, Mirena can be considered for continued use for up to 8 years for HMB.

This website is here to support you on your journey from being prescribed Mirena, through fitting and on to removal/re-fit. It arms you with knowledge about the product and answers many of the frequently asked questions. 

Mirena on the end of a finger

What is Mirena?

Get to know the facts on Mirena

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How can Mirena help?

Learn how Mirena can help you

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Healthcare professional speaking with patient

Getting a Mirena

What to expect before & after your fit

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Doctor and patient discussion in office


Find answers to frequently asked questions...

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PP-MIR-GB-0185 January 2024


Mirena® (levonorgestrel-releasing intrauterine system) is a hormone-releasing IUS that helps prevent pregnancy for up to 8 years. Mirena also treats heavy periods for up to 5 years in women. If symptoms do not return after five years of use, Mirena can be considered for continued use for up to eight years. Mirena provides endometrial protection for up to 4 years.



  • If you have a pelvic or genital infection, get infections easily, or have certain cancers, don't use Mirena. Less than 1% of users get a serious pelvic infection called pelvic inflammatory disease (PID).
  • If you have persistent pelvic or stomach pain, or excessive bleeding after placement, tell your healthcare provider (HCP). If Mirena comes out, call your HCP and avoid intercourse or use non-hormonal back-up birth control (such as condoms or spermicide). Mirena may go into or through the wall of the uterus and cause other problems.
  • Pregnancy while using Mirena is uncommon but can be life threatening and may result in loss of pregnancy or fertility.
  • Ovarian cysts may occur but usually disappear.
  • Bleeding and spotting may increase in the first 3 to 6 months and remain irregular. Periods over time usually become shorter, lighter, or may stop.


Mirena does not protect against HIV or STIs.


Only you and your HCP can decide if Mirena is right for you. Mirena is available by prescription only.


For important risk and usage information about Mirena, please see Full Patient Information Leaflet


Reporting adverse events and quality complaints
If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the yellow card scheme at
By reporting side effects, you can help provide more information on the safety of this medicine.