Estrogen Blocker for Breast Cancer: Navigating Treatment and Natural Support

Nishi Kashyap
Medically reviewed by
Dr. Kaushal

Review medical content on WOW Rx Pharmacy, so that accurate drug use information is easily accessible to everybody.
Dr. Akansha is a licensed Clinical Pharmacologist. She possesses remarkable knowledge in Pharmacovigilance, prescription analysis, drug information, and drug safety services. Additionally, she is a keen learner and an educator.

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estrogen blocker for breast cancer

Estrogen blockers, also called as anti-Estrogens, are medicines that work by stopping the effects of Estrogen on Breast Cancer cells. 

It is mainly given to women who have Breast Cancer that is affected by Estrogen, which makes Cancer grow. 

By blocking how Estrogen works, these medicines help slow down or even stop the Cancer from worsening.

This article will discuss Estrogen blocker for Breast Cancer treatment and their possible side effects.

We will also provide some natural ways that will be helpful to support medical treatment.

Estrogen blockers that are used in Breast Cancer treatment

There are many types of Estrogen blockers for Breast Cancer.

Some of them are mentioned here:

Selective Estrogen Receptor Modulators (SERMs)

SERMs are a class of Estrogen blockers. They work by blocking Estrogen from attaching to Breast Cancer cells. 

By doing so, they prevent Estrogen from binding to these receptors and activate their growth-promoting effects. 

Some well-known SERMs are Tamoxifen, Raloxifene, and Toremifene.

Did you know?
Tamoxifen can be used in both postmenopausal and premenopausal women to treat Breast Cancer.

Selective Estrogen Receptor Degraders (SERDs)

SERDs are a special kind of Estrogen blocker.

They block the effects of Estrogen on Cancer cells by sitting in the Estrogen receptors. This is important because Estrogen can make Cancer cells grow.

Second, they also help to break down or remove these receptors. This is like removing the key that lets Estrogen inside the cell, so it can’t make the Cancer cell grow.

A common SERD is called Fulvestrant, and doctors use it to treat advanced Breast Cancer.

Aromatase inhibitors

Aromatase Inhibitors are like special blockers for Estrogen. 

They focus on an enzyme named Aromatase which changes hormones called Androgens into Estrogen.

But aromatase inhibitors blocks the Aromatase and prevents the change of Androgens into Estrogen. This leads to less Estrogen in the body. 

Doctors use these inhibitors only for postmenopausal women. Only in rare cases, it is used for treating Breast Cancer in men.

Letrozole, Anastrozole, and Exemestane are some examples of aromatase inhibitors.

A doctor prescribes the dosage of these Estrogen blockers. Do not take these drugs on your own.

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You can buy Aristu 1 mg from WowRxPharmacy. These tablets are used in treating Breast Cancer in women who have been through Menopause.

Side effects

Hot flashesSource: dragana991_from_Getty_Images
Hot flashes

Estrogen blockers used to treat Breast Cancer can cause some side effects.

The severity of the medicine may differ from person to person.

Some of the side effects are:

  • Hot flashes
  • Vaginal dryness
  • Thinning bones
  • Night sweats
  • Tiredness
  • Irregular periods in premenopausal women
  • Muscle and joint pain

Natural approaches to Estrogen blockers

A few natural ways can help block Estrogen to support the treatment of Breast Cancer.

They are as follows:

Dietary changes

A few changes in your diet can play a role in blocking Estrogen. 

Some foods contain special compounds called phytoestrogens. 

These compounds are a bit like Estrogen and can help block the effects of real Estrogen. 

Foods rich in phytoestrogens are soy products, flaxseeds, and whole grains. 

Try a Mediterranean diet that includes green leafy vegetables and fruits. 

Limit the alcohol intake. These changes can also help in reducing the risk of reoccurrence of the disease.

These natural methods should be discussed with a medical expert before adding them to your routine. It is crucial to note that they are not meant to replace medical treatment.

Physical activity

Performing exercise is good for your overall health and can contribute to balancing hormones, including Estrogen. 

Regular exercise helps in maintaining healthy body weight and positively impacts how your body handles Estrogen.

Herb supplements

Green TeaSource: aaron007_from_Getty_Images_Pro
Green Tea

Some herbs have shown potential in helping to block Estrogen.

A study published in The National Library of Medicine suggests that curcumin, green tea, and rosemary can help prevent Breast Cancer.

These herbs contain compounds that could help slow down the growth-promoting effects of Estrogen on Cancer cells.

Maintain body weight

Carrying excess body weight can lead to higher levels of Estrogen in the body.

It might promote the growth of Breast Cancer cells. 

That is why it is beneficial to maintain a healthy body weight through a balanced diet and regular exercise. 


Estrogen blockers are medicines that work by stopping the effects of Estrogen on Breast Cancer cells.

SERDs, SERMs, and aromatase inhibitors are their common types.

These medications can have some side effects like hot flashes, joint pain, and vaginal dryness.

Following a healthy diet like fruits and vegetables, performing regular exercise, and maintaining a body weight can be helpful in the treatment of Breast Cancer.

Herbs supplements like curcumin, rosemary, and green tea might also support its treatment.

It is vital to ask a doctor before adding these natural ways to your routine. 

They can guide you on the best approach based on your individual circumstances and treatment plan.

Frequently Asked Questions

What is the role of Estrogen blockers for Breast Cancer?

Estrogen blockers are medicines that slow down or stop Estrogen from making Breast Cancer cells grow. Examples of these medications are Tamoxifen, Fulvestrant, and aromatase inhibitors.

What is the natural approach of blocking Estrogen for Breast Cancer?

Natural approaches to blocking Estrogen include making dietary changes and exercising regularly. Considering herbal supplements like rosemary and maintaining a healthy body weight also helps support Breast Cancer management.

Do Estrogen blockers cause any side effects?

Estrogen blockers can have side effects, although they vary from person to person. Some common side effects include hot flashes, joint pain, vaginal dryness, and tiredness. It’s important to discuss any concerns with your healthcare provider.

What herbs can help in the treatment of Breast Cancer?

Certain herbs like curcumin, green tea, and rosemary have shown the potential to support the treatment of Breast Cancer. However, it’s essential to consult a medical expert before using herbal supplements as part of your treatment plan.

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