Important Safety Information | Full Prescribing Information

See for Yourself

Mirena is an IUD made of soft, flexible plastic that’s placed into your uterus by a healthcare provider.

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Kim’s StoryKim’s Story

Kim wanted birth control
with no daily routine.

Important Safety Information | Full Prescribing Information

Kim’s Story

Kim wanted birth control with no daily routine.

Other Videos

See for YourselfSee for Yourself

Effective birth control that lasts for as
long as Kim wants, for up to 5 years.

Important Safety Information | Full Prescribing Information

A Mother’s Thoughts

A mother considers her reasons
for choosing Mirena.

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Kim’s StoryKim’s Story

Kim wanted birth control
with no daily routine.

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Reduces Heavy Periods

Mirena is the first and only birth control that's FDA-approved to treat heavy periods in women who choose intrauterine birth control.

How it helps
Kim’s Story

See why Kim chose Mirena.

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After Mirena Placement

Now that you’ve had Mirena placed, you may notice some changes to your period. Here’s some information about what you may be able to expect.

As your body adjusts to Mirena

When you start Mirena, it’s important to pay close attention to your body and the changes it may go through.

While your body is adjusting, you may notice the following:

In the first 3 to 6 months,

Your period may be irregular

Your period may be heavier at first and the number of bleeding days may increase

You may have frequent spotting or light bleeding

Few women may find that their periods are heavier than normal. Call your healthcare provider if your period continues to be heavier than usual.

After your body has adjusted,

Your period may be shorter and lighter than before

Your period may remain irregular

Your period may stop altogether

These effects may continue for as long as you have Mirena. However, your period is likely to return once Mirena is removed. If you haven’t gotten your period for 6 weeks or more, or you feel like you may be pregnant, call your healthcare provider to rule out pregnancy.

Uterine Lining Chart

With Mirena, monthly thickening of the uterine lining is lessened, which means bleeding is reduced.

Graphic representation showing the thinning of uterine lining with and without Mirena

To help keep track of your cycles, use this diary and share the results with your healthcare provider at your post-placement follow-up visit.

For women with heavy periods,
bleeding may be reduced

In a clinical trial of Mirena in women with heavy periods, the majority had an 80% reduction in bleeding as early as 3 months and a 90% reduction at 6 months.

Checking your threads

With Mirena (levonorgestrel-releasing intrauterine system), there’s no daily routine. However, you will need to check the threads of your Mirena once a month to make sure it’s where it’s supposed to be. Your healthcare provider can explain how.

The threads attached to Mirena are the only part you should feel when it is in your uterus. If you feel more than just the threads, Mirena is not in the right position and may not prevent pregnancy.

If you have trouble finding the threads or feel more than just the threads, call your healthcare provider right away. And in the meantime, use a non-hormonal form of birth control as a back-up.

No birth control is right for everyone and there are risks associated with Mirena that you should know about. For detailed information about possible side effects, some potentially serious, please see Mirena Safety Considerations and the Patient Information.

Next: If You Want to Try to Get Pregnant