Menstrual bleeding is considered heavy when it interferes with your physical, social and/or emotional quality of life. Changing sanitary wear more than once every 2 hours, or the need for double protection, are also signs of HMB.
Mirena prevents thickening of the lining of the womb, which reduces blood loss during menstruation when the lining of the womb is shed. Mirena is an effective treatment for HMB and should result in lighter bleeding after 3-6 months of use. Mirena treats HMB for 5 years, but if symptoms do not return after 5 years of use, Mirena can be considered for continued use for up to 8 years. You can also have it removed sooner if you wish.
Menopause often causes distressing symptoms, due to the gradual loss of the female sex hormones - oestrogen and progesterone - produced by the ovaries. HRT is designed to reduce those symptoms by raising levels of these hormones.
Oestrogen can be used to relieve menopausal symptoms, however, taking oestrogens alone increase the risk of abnormal growth or cancer of the lining of the womb. Therefore, most women who still have a uterus will need to take a progestogen along with oestrogen to reduce the risk of cancer of the womb.
Taking progestogen, such as the hormone in Mirena, as part of a HRT regimen lowers the risk of abnormal growth by protecting the lining of the womb. It does this by thinning the lining of your womb. Mirena can be used for 4 years when used for HRT but you can have it removed sooner if you wish.
Mirena works in the following ways to prevent pregnancy:
Mirena is over 99% effective, the possibility of becoming pregnant is approximately 2 in 1,000 in the first year. The
failure rate may increase in case of Mirena coming out by itself.
Mirena provides effective, reversible contraception for 8 years, but you can have it removed sooner if you wish.
Will I be protected immediately?
If Mirena is fitted within 7 days from the start of your period, you will be protected straight away.
PP-MIR-GB-0187 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.
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.
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 www.mhra.gov.uk/yellowcard.
By reporting side effects, you can help provide more information on the safety of this medicine.