Levonorgestrel
Mirena is a levonorgestrel-releasing intrauterine device (IUD) that provides long-acting contraception and is also used to treat heavy menstrual bleeding. It is inserted into the uterus by a healthcare provider and can remain in place for several years.
Mirena is a hormonal IUD used for long-term contraception and treatment of heavy menstrual bleeding.
Key facts at a glance
- RxNorm
- 152061
- Generic
- Mirena
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Mirena is indicated for prevention of pregnancy (contraception) and treatment of heavy menstrual bleeding in women who choose to use a hormonal contraceptive. It may also be used for endometrial protection during estrogen replacement therapy.
Mirena releases the progestin levonorgestrel directly into the uterus. The hormone thickens cervical mucus to prevent sperm from reaching the egg, thins the uterine lining, and may also prevent ovulation in some women.
Mirena must be inserted by a qualified healthcare professional. It does not protect against sexually transmitted infections (STIs). Side effects may include irregular bleeding, mood changes, or headaches. The device should be checked regularly and must be removed by a healthcare provider when replacement is needed or when pregnancy is desired.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy