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Arimidex (anastrozole) Disease Interactions

There are 4 disease interactions with Arimidex (anastrozole):


Anastrozole (Includes Arimidex) ↔ Cardiovascular

Moderate Potential Hazard, Moderate plausibility

Applies to: Ischemic Heart Disease

In studies of women with preexisting ischemic heart disease, an increased incidence of ischemic cardiovascular events was observed with the use of anastrozole. Caution should be exercised when prescribing anastrozole to these patients.


Anastrozole (Includes Arimidex) ↔ Cholesterol

Moderate Potential Hazard, Moderate plausibility

Applies to: Hyperlipidemia

During a clinical trial, more patients receiving anastrozole were reported to have elevated serum cholesterol compared to patients receiving tamoxifen (9% versus 3.5%, respectively). Caution should be taken when this agent is prescribed to these patients.


Anastrozole (Includes Arimidex) ↔ Hepatic Dysfunction

Moderate Potential Hazard, Moderate plausibility

Applies to: Liver Disease

Anastrozole is extensively metabolized by the liver. Analysis of the pharmacokinetic disposition of anastrozole in patients with hepatic cirrhosis indicates that dosage adjustments of anastrozole are not necessary in patients with mild to moderate hepatic impairment. Clinical monitoring for toxicity associated with anastrozole therapy is recommended. Therapy with anastrozole should be administered cautiously in patients with severe hepatic impairment.


  1. "Product Information. Arimidex (anastrozole)." Zeneca Pharmaceuticals, Wilmington, DE.
  2. Lonning PE, Geisler J, Dowsett M "Pharmacological and clinical profile of anastrozole." Breast Cancer Res Treat 49 (1998): s53-7

Anastrozole (Includes Arimidex) ↔ Osteoporosis

Moderate Potential Hazard, Moderate plausibility

Applies to: Osteoporosis

Results from the a clinical trial bone substudy at 12 and 24 months demonstrated that patients receiving anastrozole had a mean decrease in both lumbar spine and total hip bone mineral density (BMD) compared to baseline. Caution should exercised when prescribing this agent to patients with a risk of fractures, such as the elderly and patients with osteoporosis. Consider bone mineral density monitoring in patients treated with anastrozole.

Arimidex (anastrozole) drug Interactions

There are 41 drug interactions with Arimidex (anastrozole)

Arimidex (anastrozole) alcohol/food Interactions

There is 1 alcohol/food interaction with Arimidex (anastrozole)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

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