Mirena

Mirena is a prescription intrauterine device (IUD) that contains 52 mg of levonorgestrel, a progestin hormone. It is placed inside the uterus by a healthcare provider and works by releasing a small amount of hormone over time to prevent pregnancy. Mirena is a long-acting reversible contraceptive approved for pregnancy prevention for up to 8 years.

Mirena IUD is FDA-approved to:

• Prevent pregnancy for up to 8 years
• Treat heavy menstrual bleeding (menorrhagia) in women who choose intrauterine contraception for up to 5 years

Pros

• Highly effective birth control (over 99% effective in clinical studies)
• Long-acting contraception (approved for up to 8 years)
• Reversible (fertility typically returns after removal)
• It may reduce menstrual bleeding and cramping and is FDA-approved for the treatment of heavy menstrual bleeding for up to 5 years
• Convenient, as no daily pill is needed; maintenance‑free once inserted

Cons

• Must be inserted and removed by a healthcare provider
• It can cause irregular bleeding or spotting, especially in the first 3–6 months
• Does not protect against HIV or other sexually transmitted infections (STIs)
• Possible hormonal side effects (breast tenderness, headache, acne, mood changes)

You should not use Mirena (levonorgestrel IUS) if you:

• Are pregnant or may be pregnant
• Have current pelvic inflammatory disease (PID) or untreated pelvic infection
• Have certain uterine abnormalities (such as fibroids that distort the uterine cavity)
• Have unexplained vaginal bleeding
• Have known or suspected breast cancer or other progestin-sensitive cancer
• Have liver disease or liver tumors
• Are allergic to levonorgestrel or any component of Mirena

Mirena 52 mg is a hormone-releasing IUD that releases levonorgestrel directly into the uterus. It works primarily by thickening cervical mucus to prevent sperm from reaching the egg and by thinning the uterine lining. These effects reduce the likelihood of fertilization and implantation. Ovulation may be inhibited in some women, but is not consistently suppressed.

Mirena is a hormone-releasing IUD (intrauterine device) that contains 52 mg of levonorgestrel. It is inserted into the uterus by a trained healthcare provider.

Mirena Dosage Form and Strength

• Intrauterine system (IUD)
• Contains 52 mg levonorgestrel
• Releases approximately 20 mcg per day initially, with the release rate decreasing over time

Mirena Duration of Use

• Pregnancy prevention: Approved for up to 8 years
• Heavy menstrual bleeding: Approved for up to 5 years

No daily dosing is required once Mirena is placed.

Mirena Insertion

• Mirena must be inserted by a trained healthcare provider during an in-office visit.
• It is placed inside the uterus using a sterile applicator.
• The procedure usually takes only a few minutes.
• Some women may experience cramping, dizziness, or light bleeding during or shortly after insertion.
• A follow-up visit is typically recommended 4–6 weeks after placement to ensure proper positioning.

Patients should contact their doctor or pharmacist if they experience severe pain, fever, unusual discharge, or heavy bleeding after insertion.

Mirena Removal

• Mirena must also be removed by a healthcare provider.
• The provider gently pulls on the attached strings to remove the device from the uterus.
• Removal is usually quick and may cause brief discomfort or cramping.
• Mirena should be removed after 8 years (for contraception) or 5 years (for heavy menstrual bleeding), or earlier if desired.
• A new device may be inserted during the same visit if continued contraception is needed.

Do not attempt to insert or remove Mirena yourself.

Mirena Risks

Before choosing Mirena, patients should be aware of the following important safety risks:

• Ectopic Pregnancy: If pregnancy occurs while Mirena is in place, there is an increased risk that the pregnancy may be ectopic (outside the uterus), which can be life-threatening.
• Pelvic Inflammatory Disease (PID): Mirena may increase the risk of serious pelvic infections, especially within the first few weeks after insertion. Untreated PID can lead to infertility.
• Perforation: During insertion, Mirena may perforate (puncture) the uterine wall. This may require surgical removal.
• Expulsion: Mirena can partially or completely come out of the uterus, reducing contraceptive effectiveness.
• Sepsis: Rarely, severe infection (including Group A streptococcal sepsis) has been reported after insertion.
• Ovarian Cysts: Functional ovarian cysts may occur and usually resolve spontaneously.
• Breast Cancer Risk Consideration: Mirena should not be used in women with known or suspected breast cancer.

Mirena Precautions

Patients using Mirena 52 mg IUD should follow these precautions:

• Mirena must be inserted by a trained healthcare provider.
• A follow-up examination is recommended 4–6 weeks after insertion.
• Patients should check for the presence of IUD strings as instructed.
• Use caution in women with a history of pelvic infection, immune compromise, or bleeding disorders.
• Mirena does not protect against HIV or other sexually transmitted infections (STIs).
• Mirena is considered MRI safe under specific conditions, but inform a healthcare provider before undergoing an MRI or uterine procedures.
• Use caution in patients taking anticoagulants, as insertion may increase bleeding risk.
• Mirena should be removed if severe re-infection, uterine perforation, or pregnancy occurs.

Mirena (levonorgestrel intrauterine system) may cause changes in menstrual bleeding patterns and carries certain risks, including rare but serious complications. This is not a complete list of possible side effects. Patients should seek medical attention if they experience severe, persistent, or unusual symptoms.

If you buy Mirena online at home before your appointment:

• Keep it in its original, unopened sterile package.
• Store it at room temperature 20°C-25°C (68°F-77°F).
• Short-term temperature excursions between 15°C-30°C (59°F-86°F) are permitted.
• Protect from excessive heat, moisture, and freezing.
• Do not open the sterile package.

Once inserted, Mirena remains inside the uterus and does not require storage. If you have any questions about handling before your appointment, consult your healthcare provider or pharmacist.

Mirena releases levonorgestrel primarily within the uterus. Because systemic hormone levels are lower compared to oral hormonal contraceptives, clinically significant drug interactions are less likely. However, interactions cannot be completely ruled out.

Medicines That May Affect Mirena

Drugs or herbal products that induce liver enzymes (CYP3A4 inducers) may decrease systemic levonorgestrel concentrations. The clinical significance of this effect with Mirena is unclear due to its primarily local mechanism of action. Examples include:

• Rifampin and other rifamycins
• Certain anticonvulsants (such as carbamazepine, phenytoin, phenobarbital)
• Some antiretroviral medications used for HIV
• St. John’s Wort

Patients should inform their provider about all prescription medicines, OTC products, and herbal supplements before Mirena insertion to ensure appropriate evaluation.

If Mirena is not suitable, several contraceptive options are available. The right Mirena alternative should be selected with your healthcare provider based on medical history, risk factors, and personal preference.

The high Mirena cost can make long-term birth control expensive for many women. That is why many customers choose Polar Bear Meds to buy Mirena online from Canada at more affordable prices. We partner with licensed pharmacies to ensure quality and authenticity. Patients can save up to 80-90% compared to typical U.S. retail pharmacy prices.

Buying Mirena online helps make reliable, long-acting contraception more affordable while maintaining safe and secure ordering. New customers can also use the Mirena coupon code “WELCOMEPB10” to receive 10% off their first order.

Mirena orders ship promptly and typically arrive within 3–5 business days via Xpress Post. Delivery timing may vary by location in the U.S., and a valid prescription is required to purchase Mirena.

• https://www.bayer.com/sites/default/files/mirena-pm-en.pdf
• https://www.accessdata.fda.gov/drugsatfda_docs/label/2022/021225s043lbl.pdf
• https://www.mayoclinic.org/tests-procedures/mirena/about/pac-20391354
• https://www.webmd.com/drugs/mirena-levonorgestrel