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

Summary:

Breast cyst is reported as a side effect among people who take Mirena (levonorgestrel), especially for people who are 30-39 old, have been taking the drug for 2 - 5 years also take Magnesium, and have Hypothyroidism.

The phase IV clinical study analyzes which people have Breast cyst when taking Mirena. It is created by eHealthMe based on reports of 143,466 people who have side effects when taking Mirena from the FDA, and is updated regularly.

What is Mirena?

Mirena has active ingredients of levonorgestrel. It is often used in birth control. eHealthMe is studying from 145,266 Mirena users. Check the latest studies of Mirena.

What is Breast cyst?

Breast cyst is found to be associated with 316 drugs and 411 conditions by eHealthMe. Check the latest studies of Breast cyst.

On Aug, 03, 2026

143,466 people reported to have side effects when taking Mirena.
Among them, 139 people (0.1%) have Breast cyst.

Among these 139 people:

* Approximation only. Some reports may have incomplete information.

Do you take Mirena 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 Mirena:

Mirena (145,266 reports)

Breast cyst treatments and more:

Breast cyst (2,703 reports)

How severe was Breast cyst and when was it recovered:

Breast cyst in Mirena

Expand to all the drugs that have ingredients of levonorgestrel:

Breast cyst and drugs with ingredients of levonorgestrel (147 reports)

Sub-studies by age:

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

Browse all side effects of Mirena:

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:

Breast cyst (316 drugs)

Browse all the conditions that are associated with Breast cyst:

Breast cyst (411 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on levonorgestrel (the active ingredients of Mirena) and Mirena (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.