Arimidex and Breast cyst - a phase IV clinical study of FDA data

Summary:

Breast cyst is reported as a side effect among people who take Arimidex (anastrozole), especially for people who are 40-49 old, have been taking the drug for 5 - 10 years also take Zometa, and have Menopause.

The phase IV clinical study analyzes which people have Breast cyst when taking Arimidex. It is created by eHealthMe based on reports of 21,680 people who have side effects when taking Arimidex from the FDA, and is updated regularly.

What is Arimidex?

Arimidex has active ingredients of anastrozole. It is often used in breast cancer. eHealthMe is studying from 22,642 Arimidex users. Check the latest studies of Arimidex.

What is Breast cyst?

Breast cyst is found to be associated with 317 drugs and 411 conditions by eHealthMe. Check the latest studies of Breast cyst.



On Jun, 17, 2026

21,680 people reported to have side effects when taking Arimidex.
Among them, 25 people (0.12%) have Breast cyst.

Could Arimidex cause Breast cyst?

Among these 25 people:

How long have people been on Arimidex when they have Breast cyst? *

  • < 1 month: 0.0 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 50 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 50 %
  • 10+ years: 0.0 %

What is the age of people who have Breast cyst when taking Arimidex? *

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 7.69 %
  • 20-29: 0.0 %
  • 30-39: 0.0 %
  • 40-49: 38.46 %
  • 50-59: 30.77 %
  • 60+: 23.08 %

What are other drugs people take besides Arimidex? *

  1. Zometa: 17 people, 68.00%
  2. Prempro: 13 people, 52.00%
  3. Provera: 12 people, 48.00%
  4. Keflex: 11 people, 44.00%
  5. Ibuprofen: 10 people, 40.00%
  6. Amoxicillin: 10 people, 40.00%
  7. Vicodin: 10 people, 40.00%
  8. Atenolol: 9 people, 36.00%
  9. Lovastatin: 9 people, 36.00%
  10. Pepcid: 9 people, 36.00%

What are other side effects people have besides Breast cyst? *

  1. Pain: 19 people, 76.00%
  2. Hot Flush (sudden feelings of heat): 18 people, 72.00%
  3. Metastases To Bone (cancer spreads to bone): 16 people, 64.00%
  4. General Physical Health Deterioration (weak health status): 16 people, 64.00%
  5. Depression: 16 people, 64.00%
  6. Bone Disorder: 15 people, 60.00%
  7. Infection: 15 people, 60.00%
  8. Injury: 14 people, 56.00%
  9. Hypoaesthesia (reduced sense of touch or sensation): 14 people, 56.00%
  10. Swelling: 13 people, 52.00%

What are the existing conditions these people have? *

  1. Temporomandibular Joint Syndrome (pain at the temporomandibular joint due to various causes of increased muscle tension and spasm. it is believed that syndrome is a physical manifestation of psychological stress): 3 people, 12.00%
  2. Migraine (headache): 3 people, 12.00%
  3. Menopause (end of monthly cycles in women): 3 people, 12.00%
  4. Poor Quality Sleep: 2 people, 8.00%
  5. Bone Density Decreased: 2 people, 8.00%
  6. Osteopenia (a condition where bone mineral density is lower than normal): 1 person, 4.00%
  7. Metastases To Bone (cancer spreads to bone): 1 person, 4.00%
  8. Bone Disorder: 1 person, 4.00%

* Approximation only. Some reports may have incomplete information.

Do you take Arimidex and have Breast cyst?

- Check whether Breast cyst is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously



Related studies:

Effectiveness of, long term effects of, and alternative drugs to Arimidex:

Breast cyst treatments and more:

How severe was Breast cyst and when was it recovered:

Expand to all the drugs that have ingredients of anastrozole:

Sub-studies by age:

0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Arimidex:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Breast cyst:

Browse all the conditions that are associated with Breast cyst:

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on anastrozole (the active ingredients of Arimidex) and Arimidex (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.



Recent studies on eHealthMe: