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Anastrozole is a custom drug that is primarily used to combat certain kinds of breast cancer in postmenopausal women. Anastrozole is particularly adept at blocking the estrogen producing enzyme aromatase which can aid in decreasing tumor size as well as delaying some tumor growth in general.

How to Use Anastrozole

Anastrozole should be taken by mouth, as directed by your physician, typically once a day. This medication can be taken with or without food; consult your physician as to the optimum conditions for your dosage.

Possible Side Effects

Any medication may contribute to side effects depending on the individual patient and their own unique body chemistry. Some common side effects of anastrozole are listed below:

  • Dizziness
  • Upset Stomach
  • Hot Flashes
  • Headaches
  • Vomiting or Nausea
  • Diarrhea, or Constipation
  • Weight Gain
  • Weakness
  • Tired Feeling
  • Increase in Coughing
  • Sore Throat
  • Difficulty Sleeping
  • Loss of Appetite

If any of the aforementioned persist or seem to be worsening, consult with your pharmacist or physician immediately. As there are many potential serious side effects that would require immediate medical attention if experienced, anyone who is considering taking anastrozole should first consult with their physician. Serious allergic reactions to anastrozole are not common but if you experience swelling, rash, difficulty breathing, or any other irregular change, seek medical attention immediately.


Do not use anastrozole if any of the following apply to you: You have not yet gone through menopause. You are allergic to anastrozole. You are a child or a man. You are pregnant or planning a pregnancy. You are taking any products or medications/drugs that contain estrogen.

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