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Anastrozole is available as a 1 mg oral tablet.

Anastrozole is an aromatase inhibitor that is used to treat early stage HR+ breast cancer in postmenopausal women, advanced or metastatic HR+ breast cancer in postmenopausal women, and advanced breast cancer in postmenopausal women that’s getting worse after treatment with tamoxifen.

Anastrozole is an aromatase inhibitor. Aromatase is a protein in your body that helps change other hormones into estrogen. By blocking aromatase, Anastrozole (Anastrozole) lowers the amount of estrogen in your body. This is helpful since estrogen can fuel the growth of certain types of breast cancer cells. Without estrogen, cancer cells won’t have the “fuel” they need to grow or spread.

Anastrozole is typically taken by mouth once daily.

Anastrozole is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not take this medication if you are premenopausal or pregnant.

Common side effects of Anastrozole include:

• Hot flashes
• Muscle and joint problems
• Tiredness
• Changes in mood
• Nausea and vomiting
• Bone fractures
• Cataracts
• Vaginal bleeding

Serious side effects are rare with Anastrozole. Contact your healthcare provider immediately if you experience any of the following.

• Heart disease: chest pain, shortness of breath, lightheadedness

The following medications may interact with Anastrozole:

• Tamoxifen – Do not use in combination with Anastrozole as no additional benefit seen when used together
• Estrogen-containing products – Combination use may diminish activity of Anastrozole

Various FDA-approved generic manufacturers

Anastrozole may cause harm to your unborn baby and is contraindicated in women who are or may become pregnant.

• Arimidex