Home Drugs Arimidex – Drug Uses, Side Effects and Precautions

Arimidex – Drug Uses, Side Effects and Precautions

Arimidex (anastrozole) is a medication used for the treatment of breast cancer in postmenopausal women. It slows down the growth of breast tumors by reducing estrogen levels in women. It contains anastrozole which is a selective aromatase inhibitor.

Generic name: anastrozole
Brand name: Arimidex
Drug Class: Aromatase inhibitors, Hormones/antineoplastics


Uses of Arimidex

It is used as:

  • adjuvant treatment in postmenopausal women with early-stage hormone receptor-positive breast cancer.
  • first-line treatment in postmenopausal women with locally advanced or metastatic HR+ or HR-unknown breast cancer
  • as second-line treatment for advanced breast cancer in postmenopausal women with disease progression following tamoxifen therapy.

It is ineffective in patients with estrogen receptor-negative breast cancer and those who fail tamoxifen therapy.

How To Take Arimidex

Arimidex should be taken exactly as directed by your doctor. Read all drug guides or instruction sheets and follow all guidelines on your prescription label.

Arimidex is typically used once a day. Pay close attention to your doctor’s dosing instructions. Arimidex can be taken with or without food.

It’s possible that you’ll need to take this medication for up to 5 years. Pay attention to your doctor’s directions. Keep away from moisture and heat. Store at room temperature.

Side Effects

The following side effects can be associated with taking Arimidex They include mild and severe side effects.

Consult your doctor or pharmacist for further information on any potential adverse effects. They can provide you with advice on how to deal with any unpleasant side effects.

Mild side effects include:

Severe side effects include:

  • hepatitis
  • skin ulcers
  • allergic reaction
  • osteoporosis
  • increased cholesterol level

Severe side effects are uncommon, but they can happen. If you experience any major side effects, contact your doctor at once. If your symptoms are life-threatening or you believe you’re having a medical emergency, dial 911 or your local emergency number.


Arimidex may reduce blood flow to your heart, particularly if you have had coronary artery disease in the past. If you have new or worsening chest pain, or shortness of breath, seek medical help.

Do not take anastrozole if you are pregnant as it can cause harm to the fetus.

Arimidex can raise your chances of having a stroke or a blood clot. If you experience abrupt numbness or weakness (particularly on one side of your body), a strong headache, slurred speech, or vision or balance issues, call your doctor right once.


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