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We have a vast digital library of medical information, including wellness and psychiatry topics as well as general medical topics. For more information or to schedule an appointment, don’t hesitate to call us.

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Uterine Fibroids: Should I Use GnRH-A Therapy?

You may want to have a say in this decision, or you may simply want to follow your doctor's recommendation. Either way, this information will help you understand what your choices are so that you can talk to your doctor about them.

Uterine Fibroids: Should I Use GnRH-A Therapy?

Get the facts

Your options

  • Use GnRH-a to shrink fibroids before surgery, to stop heavy bleeding, or to treat symptoms for a short time before menopause.
  • Choose another method to treat uterine fibroids, such as over-the-counter pain medicine, fibroid embolization, birth control pills, or surgery.

This decision aid is for people who have decided to treat their uterine fibroids. Many fibroids do not need treatment.

If you've decided to treat your uterine fibroids, you may also need to make a decision about embolization or a decision about surgery.

If you also have problems with infertility, you may want to try another treatment.

Key points to remember

  • Taking gonadotropin-releasing hormone agonists (GnRH-a) puts your body into a state like menopause for as long as you take it. This shrinks fibroids. After you stop taking it, your fibroids may grow back.
  • Taking GnRH-a can cause serious side effects, such as bone loss. To limit side effects, you take it for a limited amount of time.
  • GnRH-a therapy may be a good choice if you are close to menopause (when fibroids shrink), have heavy bleeding from fibroids, or are planning surgery. This medicine usually is not used to relieve fibroid symptoms only, because fibroids grow back fairly quickly after treatment stops.
  • It's possible—but not likely—for you to get pregnant while taking GnRH-a. If you don't want to get pregnant, ask your doctor about birth control.
FAQs

What are uterine fibroids?

Uterine fibroids are growths in the uterus. They are not cancer. Fibroids can grow on the inside of the uterus, in the muscle wall of the uterus, or on the outer surface of the uterus. They can change the shape of the uterus as they grow. This can make it hard for you to get pregnant, or it can cause problems during a pregnancy.

Over time, the size, shape, location, and symptoms of fibroids may change.

Uterine fibroids are more common as you age, especially from your 30s and 40s until menopause. Most have mild or no symptoms. But fibroids can cause bad pain, bleeding, and other problems.

The cause of fibroids is not known. But the hormones estrogen and progesterone can make them grow. After menopause, when hormone levels decrease, fibroids often shrink or disappear.

When do fibroids need to be treated?

Uterine fibroids usually need treatment when they cause:

  • Anemia from heavy fibroid bleeding.
  • Ongoing low back pain or a feeling of pressure in the lower belly.
  • Trouble getting pregnant.
  • Problems during pregnancy, such as preterm labor.
  • Problems with the urinary tract or bowels.

Depending on the reasons you need treatment, one type of treatment may work better for you than another.

How does GnRH-a therapy work?

This medicine puts your body into a state like menopause for as long as you take it. This lowers your body's estrogen. This estrogen decrease:

  • Stops menstrual periods.
  • Stops the growth of and reduces the size of uterine fibroids.

GnRH-a therapy is not usually used to relieve pain and bleeding only, because fibroids grow back fairly quickly after you stop taking GnRH-a. But it is sometimes used to shrink large fibroids before fibroid surgery or to stop heavy bleeding from fibroids.

For people who are close to menopause (when fibroids will shrink on their own), short-term relief from GnRH-a therapy can be a good choice.

Why might your doctor recommend GnRH-a?

  • You have severe bleeding from uterine fibroids and need treatment right away.
  • Other treatments for fibroids haven't helped your symptoms, and you're planning surgery later.
  • You're close to menopause, when fibroids will get smaller or go away.
  • You're planning to have surgery to take out large fibroids.
  • You're not planning on getting pregnant soon.

Compare your options

Compare

What is usually involved?









What are the benefits?









What are the risks and side effects?









Take GnRH-a Take GnRH-a
  • GnRH-a is given one of three ways:
    • It can be injected into a muscle once a month. It is also available in a dose that lasts for 3 months.
    • It can be injected under the skin of your belly once every 28 days.
    • Or you can spray it into your nose twice a day.
  • To avoid long-term side effects, you probably will take it for a limited amount of time.
  • It's possible, though not likely, that you can get pregnant while taking this medicine. Use a barrier method of birth control, such as condoms, if you want to keep from getting pregnant.
  • Your symptoms may get better or go away, because fibroids usually shrink.
  • You can treat your fibroids briefly until menopause, when fibroids will get smaller on their own.
  • GnRH-a can shrink fibroids before surgery to remove them. This makes fibroids easier to remove and can reduce the risk of bleeding during surgery and problems after surgery.
  • GnRH-a can cause bone loss, so it is used for a limited amount of time.
  • The medicine may give you symptoms like those from menopause, such as hot flashes and vaginal dryness.
  • The medicine only treats fibroids for a while. Fibroids tend to grow back after you stop taking GnRH-a.
Don't take GnRH-a Don't take GnRH-a
  • You can take nonsteroidal anti-inflammatory drugs (NSAIDs) to treat pain and bleeding.
  • You can take birth control pills to control bleeding from fibroids.
  • You can have fibroid embolization to shrink your fibroids.
  • You can have surgery to take out your uterus or just the fibroids.
  • If you're close to menopause, you can try to live with the symptoms for a while. Fibroids get smaller or go away after menopause.
  • You won't have side effects such as hot flashes and vaginal dryness.
  • You won't have possible bone loss from the medicine.
  • Fibroid embolization may give longer-lasting relief from your symptoms than GnRH-a.
  • Surgery to remove your uterus would cure your fibroids. But this is a good choice only if you don't want to get pregnant in the future.
  • Your symptoms could get worse.
  • Fibroids could make it hard for you to get pregnant.
  • You could have pain or infection from fibroid embolization.
  • You could have side effects from taking NSAIDs.
  • Birth control pills have possible side effects, such as headaches and light or skipped periods. They may be a risky choice if you smoke or have heart disease.

Personal stories about hormone therapy for uterine fibroids

These stories are based on information gathered from health professionals and consumers. They may be helpful as you make important health decisions.

I first noticed that my periods were getting worse about a year ago. I wasn't too concerned, but I discussed the pain with my doctor when I went for a Pap smear. My exam and Pap smear were fine. My doctor said that uterine fibroids could be the cause of my pain. My mom and an older sister have had uterine fibroids, so I thought that must be it. My doctor talked to me about my options. She told me that using birth control pills and ibuprofen would be the best way to start. Now my periods are lighter. And, when I start taking ibuprofen a few days before my period starts, it really helps relieve my pain.

Amy, age 32

The pain before and during my periods was so bad, I couldn't exercise. I am an active person, and the pain was really getting me down. I have had uterine fibroids for years and have tried ibuprofen and other nonprescription medicines, but they were not helping anymore. When I went to see my doctor about the pain, she said maybe it was time for surgery. I asked if there were any other options, since the last time I had surgery it took me months to recover. I didn't want to go through that again. My doctor said a hormone medicine might help me. She said that it has side effects, so I can't take it for longer than 6 months. That's okay, because menopause is right around the corner for me, and fibroids get better after menopause. After starting the medicine, I did have more hot flashes than usual, but my heavy menstrual bleeding and menstrual pain are almost gone. I think taking this medicine works well for me.

Patricia, age 52

I started having really painful menstrual periods about 3 years ago. My doctor asked a lot of questions about my periods and did an exam and some tests. Most of the tests came back normal, but my doctor thought, based on the ultrasound, that uterine fibroids might be the cause of my pain. I tried using a birth control patch for a few months, along with ibuprofen, but it didn't work too well. But it was enough of an improvement to make life tolerable. I really don't want to use any stronger hormone medicine.

Susan, age 37

What matters most to you?

Your personal feelings are just as important as the medical facts. Think about what matters most to you in this decision, and show how you feel about the following statements.

Reasons to take GnRH-a for fibroids

Reasons not to take GnRH-a for fibroids

My symptoms are bad, and other treatments haven't helped.

I can control my symptoms with other treatments.

More important
Equally important
More important

I'm only taking it for a few months, so I'm not worried about side effects.

I don't want to take any chance of having side effects.

More important
Equally important
More important

I want to treat my fibroids, even if they might come back.

I don't want to take hormones if they won't cure my fibroids.

More important
Equally important
More important

I don't plan to get pregnant.

I don't want to have to wait to get pregnant.

More important
Equally important
More important

My other important reasons:

My other important reasons:

More important
Equally important
More important

Where are you leaning now?

Now that you've thought about the facts and your feelings, you may have a general idea of where you stand on this decision. Show which way you are leaning right now.

Taking GnRH-a

NOT taking GnRH-a

Leaning toward
Undecided
Leaning toward

What else do you need to make your decision?

Check the facts

1, Is GnRH-a a good choice to treat fibroids if you're close to menopause?
2, Will GnRH-a prevent pregnancy while you take it?
3, Are side effects likely when you take GnRH-a?

Decide what's next

1,Do you understand the options available to you?
2,Are you clear about which benefits and side effects matter most to you?
3,Do you have enough support and advice from others to make a choice?

Certainty

1. How sure do you feel right now about your decision?

Not sure at all
Somewhat sure
Very sure
2, Check what you need to do before you make this decision.

Your Summary

Here's a record of your answers. You can use it to talk with your doctor or loved ones about your decision.

Your decision  

Next steps

Which way you're leaning

How sure you are

Your comments

Your knowledge of the facts  

Key concepts that you understood

Key concepts that may need review

Getting ready to act  

Patient choices

What matters to you  

Print Summary

Credits

Credits
Author Ignite Healthwise, LLC Staff
Clinical Review BoardClinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
You may want to have a say in this decision, or you may simply want to follow your doctor's recommendation. Either way, this information will help you understand what your choices are so that you can talk to your doctor about them.

Uterine Fibroids: Should I Use GnRH-A Therapy?

Here's a record of your answers. You can use it to talk with your doctor or loved ones about your decision.
  1. Get the facts
  2. Compare your options
  3. What matters most to you?
  4. Where are you leaning now?
  5. What else do you need to make your decision?

1. Get the Facts

Your options

  • Use GnRH-a to shrink fibroids before surgery, to stop heavy bleeding, or to treat symptoms for a short time before menopause.
  • Choose another method to treat uterine fibroids, such as over-the-counter pain medicine, fibroid embolization, birth control pills, or surgery.

This decision aid is for people who have decided to treat their uterine fibroids. Many fibroids do not need treatment.

If you've decided to treat your uterine fibroids, you may also need to make a decision about embolization or a decision about surgery.

If you also have problems with infertility, you may want to try another treatment.

Key points to remember

  • Taking gonadotropin-releasing hormone agonists (GnRH-a) puts your body into a state like menopause for as long as you take it. This shrinks fibroids. After you stop taking it, your fibroids may grow back.
  • Taking GnRH-a can cause serious side effects, such as bone loss. To limit side effects, you take it for a limited amount of time.
  • GnRH-a therapy may be a good choice if you are close to menopause (when fibroids shrink), have heavy bleeding from fibroids, or are planning surgery. This medicine usually is not used to relieve fibroid symptoms only, because fibroids grow back fairly quickly after treatment stops.
  • It's possible—but not likely—for you to get pregnant while taking GnRH-a. If you don't want to get pregnant, ask your doctor about birth control.
FAQs

What are uterine fibroids?

Uterine fibroids are growths in the uterus. They are not cancer. Fibroids can grow on the inside of the uterus, in the muscle wall of the uterus, or on the outer surface of the uterus. They can change the shape of the uterus as they grow. This can make it hard for you to get pregnant, or it can cause problems during a pregnancy.

Over time, the size, shape, location, and symptoms of fibroids may change.

Uterine fibroids are more common as you age, especially from your 30s and 40s until menopause. Most have mild or no symptoms. But fibroids can cause bad pain, bleeding, and other problems.

The cause of fibroids is not known. But the hormones estrogen and progesterone can make them grow. After menopause, when hormone levels decrease, fibroids often shrink or disappear.

When do fibroids need to be treated?

Uterine fibroids usually need treatment when they cause:

  • Anemia from heavy fibroid bleeding.
  • Ongoing low back pain or a feeling of pressure in the lower belly.
  • Trouble getting pregnant.
  • Problems during pregnancy, such as preterm labor.
  • Problems with the urinary tract or bowels.

Depending on the reasons you need treatment, one type of treatment may work better for you than another.

How does GnRH-a therapy work?

This medicine puts your body into a state like menopause for as long as you take it. This lowers your body's estrogen. This estrogen decrease:

  • Stops menstrual periods.
  • Stops the growth of and reduces the size of uterine fibroids.

GnRH-a therapy is not usually used to relieve pain and bleeding only, because fibroids grow back fairly quickly after you stop taking GnRH-a. But it is sometimes used to shrink large fibroids before fibroid surgery or to stop heavy bleeding from fibroids.

For people who are close to menopause (when fibroids will shrink on their own), short-term relief from GnRH-a therapy can be a good choice.

Why might your doctor recommend GnRH-a?

  • You have severe bleeding from uterine fibroids and need treatment right away.
  • Other treatments for fibroids haven't helped your symptoms, and you're planning surgery later.
  • You're close to menopause, when fibroids will get smaller or go away.
  • You're planning to have surgery to take out large fibroids.
  • You're not planning on getting pregnant soon.

2. Compare your options

 Take GnRH-aDon't take GnRH-a
What is usually involved?
  • GnRH-a is given one of three ways:
    • It can be injected into a muscle once a month. It is also available in a dose that lasts for 3 months.
    • It can be injected under the skin of your belly once every 28 days.
    • Or you can spray it into your nose twice a day.
  • To avoid long-term side effects, you probably will take it for a limited amount of time.
  • It's possible, though not likely, that you can get pregnant while taking this medicine. Use a barrier method of birth control, such as condoms, if you want to keep from getting pregnant.
  • You can take nonsteroidal anti-inflammatory drugs (NSAIDs) to treat pain and bleeding.
  • You can take birth control pills to control bleeding from fibroids.
  • You can have fibroid embolization to shrink your fibroids.
  • You can have surgery to take out your uterus or just the fibroids.
  • If you're close to menopause, you can try to live with the symptoms for a while. Fibroids get smaller or go away after menopause.
What are the benefits?
  • Your symptoms may get better or go away, because fibroids usually shrink.
  • You can treat your fibroids briefly until menopause, when fibroids will get smaller on their own.
  • GnRH-a can shrink fibroids before surgery to remove them. This makes fibroids easier to remove and can reduce the risk of bleeding during surgery and problems after surgery.
  • You won't have side effects such as hot flashes and vaginal dryness.
  • You won't have possible bone loss from the medicine.
  • Fibroid embolization may give longer-lasting relief from your symptoms than GnRH-a.
  • Surgery to remove your uterus would cure your fibroids. But this is a good choice only if you don't want to get pregnant in the future.
What are the risks and side effects?
  • GnRH-a can cause bone loss, so it is used for a limited amount of time.
  • The medicine may give you symptoms like those from menopause, such as hot flashes and vaginal dryness.
  • The medicine only treats fibroids for a while. Fibroids tend to grow back after you stop taking GnRH-a.
  • Your symptoms could get worse.
  • Fibroids could make it hard for you to get pregnant.
  • You could have pain or infection from fibroid embolization.
  • You could have side effects from taking NSAIDs.
  • Birth control pills have possible side effects, such as headaches and light or skipped periods. They may be a risky choice if you smoke or have heart disease.

Personal stories

Personal stories about hormone therapy for uterine fibroids

These stories are based on information gathered from health professionals and consumers. They may be helpful as you make important health decisions.

"I first noticed that my periods were getting worse about a year ago. I wasn't too concerned, but I discussed the pain with my doctor when I went for a Pap smear. My exam and Pap smear were fine. My doctor said that uterine fibroids could be the cause of my pain. My mom and an older sister have had uterine fibroids, so I thought that must be it. My doctor talked to me about my options. She told me that using birth control pills and ibuprofen would be the best way to start. Now my periods are lighter. And, when I start taking ibuprofen a few days before my period starts, it really helps relieve my pain."

— Amy, age 32

"The pain before and during my periods was so bad, I couldn't exercise. I am an active person, and the pain was really getting me down. I have had uterine fibroids for years and have tried ibuprofen and other nonprescription medicines, but they were not helping anymore. When I went to see my doctor about the pain, she said maybe it was time for surgery. I asked if there were any other options, since the last time I had surgery it took me months to recover. I didn't want to go through that again. My doctor said a hormone medicine might help me. She said that it has side effects, so I can't take it for longer than 6 months. That's okay, because menopause is right around the corner for me, and fibroids get better after menopause. After starting the medicine, I did have more hot flashes than usual, but my heavy menstrual bleeding and menstrual pain are almost gone. I think taking this medicine works well for me."

— Patricia, age 52

"I started having really painful menstrual periods about 3 years ago. My doctor asked a lot of questions about my periods and did an exam and some tests. Most of the tests came back normal, but my doctor thought, based on the ultrasound, that uterine fibroids might be the cause of my pain. I tried using a birth control patch for a few months, along with ibuprofen, but it didn't work too well. But it was enough of an improvement to make life tolerable. I really don't want to use any stronger hormone medicine."

— Susan, age 37

3. What matters most to you?

Your personal feelings are just as important as the medical facts. Think about what matters most to you in this decision, and show how you feel about the following statements.

Reasons to take GnRH-a for fibroids

Reasons not to take GnRH-a for fibroids

My symptoms are bad, and other treatments haven't helped.

I can control my symptoms with other treatments.

       
More important
Equally important
More important

I'm only taking it for a few months, so I'm not worried about side effects.

I don't want to take any chance of having side effects.

       
More important
Equally important
More important

I want to treat my fibroids, even if they might come back.

I don't want to take hormones if they won't cure my fibroids.

       
More important
Equally important
More important

I don't plan to get pregnant.

I don't want to have to wait to get pregnant.

       
More important
Equally important
More important

My other important reasons:

My other important reasons:

  
       
More important
Equally important
More important

4. Where are you leaning now?

Now that you've thought about the facts and your feelings, you may have a general idea of where you stand on this decision. Show which way you are leaning right now.

Taking GnRH-a

NOT taking GnRH-a

       
Leaning toward
Undecided
Leaning toward

5. What else do you need to make your decision?

Check the facts

1. Is GnRH-a a good choice to treat fibroids if you're close to menopause?

  • Yes
  • No
  • I'm not sure
You're right. GnRH-a may be a good choice to treat fibroids if you are close to menopause. After menopause, fibroids get smaller or go away.

2. Will GnRH-a prevent pregnancy while you take it?

  • Yes
  • No
  • I'm not sure
You're right. It is possible, though not likely, to get pregnant while taking GnRH-a. If you don't want to get pregnant, ask your doctor about birth control.

3. Are side effects likely when you take GnRH-a?

  • Yes
  • No
  • I'm not sure
You're right. GnRH-a can cause bone loss. That's why doctors prescribe it only for a limited amount of time. It also causes symptoms like those of menopause.

Decide what's next

1. Do you understand the options available to you?

2. Are you clear about which benefits and side effects matter most to you?

3. Do you have enough support and advice from others to make a choice?

Certainty

1. How sure do you feel right now about your decision?

     
Not sure at all
Somewhat sure
Very sure

2. Check what you need to do before you make this decision.

  • I'm ready to take action.
  • I want to discuss the options with others.
  • I want to learn more about my options.
 
Credits
By Ignite Healthwise, LLC Staff
Clinical Review BoardClinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
Note: The "printer friendly" document will not contain all the information available in the online document some Information (e.g. cross-references to other topics, definitions or medical illustrations) is only available in the online version.
Top of the page

Current as of: April 30, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

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