Purinethol and Breast lump - a phase IV clinical study of FDA data

Summary:

Breast lump is reported as a side effect among people who take Purinethol (mercaptopurine), especially for people who are female, 50-59 old, also take Imuran, and have Asthma.

The phase IV clinical study analyzes which people have Breast lump when taking Purinethol. It is created by eHealthMe based on reports of 3,767 people who have side effects when taking Purinethol from the FDA, and is updated regularly.

What is Purinethol?

Purinethol has active ingredients of mercaptopurine. It is often used in ulcerative colitis. eHealthMe is studying from 3,810 Purinethol users. Check the latest studies of Purinethol.

What is Breast lump?

Breast lump (localized swelling that feels different from the surrounding breast tissue) is found to be associated with 789 drugs and 924 conditions by eHealthMe. Check the latest studies of Breast lump.

On Jun, 04, 2026

3,767 people reported to have side effects when taking Purinethol.
Among them, 16 people (0.42%) have Breast lump.

Among these 16 people:

* Approximation only. Some reports may have incomplete information.

Do you take Purinethol and have Breast lump?

- Check whether Breast lump 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 Purinethol:

Purinethol (3,810 reports)

Breast lump treatments and more:

Breast lump (9,236 reports)

How severe was Breast lump and when was it recovered:

Breast lump in Purinethol

Expand to all the drugs that have ingredients of mercaptopurine:

Breast lump and drugs with ingredients of mercaptopurine (12 reports)

Sub-studies by gender and age:

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

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

Browse all side effects of Purinethol:

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 lump:

Breast lump (789 drugs)

Browse all the conditions that are associated with Breast lump:

Breast lump (924 conditions)

How the study uses the data?

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