Codeine and Breast cancer - a phase IV clinical study of FDA data

Summary:

Breast cancer is reported as a side effect among people who take Codeine (codeine sulfate), especially for people who are female, 40-49 old, also take Humira, and have Rheumatoid arthritis.

The phase IV clinical study analyzes which people have Breast cancer when taking Codeine. It is created by eHealthMe based on reports of 41,713 people who have side effects when taking Codeine from the FDA, and is updated regularly.

What is Codeine?

Codeine has active ingredients of codeine sulfate. It is often used in pain. eHealthMe is studying from 42,342 Codeine users. Check the latest studies of Codeine.

What is Breast cancer?

Breast cancer is found to be associated with 1,293 drugs and 1,670 conditions by eHealthMe. Check the latest studies of Breast cancer.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Jul, 26, 2026

41,713 people reported to have side effects when taking Codeine.
Among them, 86 people (0.21%) have Breast cancer.

Among these 86 people:

What is the gender of people who have Breast cancer when taking Codeine? *

female: 98.57 %
male: 1.43 %

What is the age of people who have Breast cancer when taking Codeine? *

What are other drugs people take besides Codeine? *

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

High Blood Pressure: 39 people, 45.35%
Drug Ineffective: 28 people, 32.56%
Disability: 28 people, 32.56%
Nasopharyngitis (inflammation of the nasopharynx): 27 people, 31.40%
Precancerous Cells Present: 27 people, 31.40%
Breast Lump (localized swelling that feels different from the surrounding breast tissue): 27 people, 31.40%
Weight Decreased: 24 people, 27.91%
Drug Hypersensitivity: 23 people, 26.74%
Dermatitis Allergic (inflammation of the skin due allergic reaction): 23 people, 26.74%
Diarrhea: 21 people, 24.42%

What are the existing conditions these people have? *

Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 34 people, 39.53%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 17 people, 19.77%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 11 people, 12.79%
Diarrhea: 11 people, 12.79%
Breast Cancer Metastatic: 8 people, 9.30%
Oral Herpes (viral infection of mouth): 6 people, 6.98%
Cholecystitis (infection of gallbladder): 5 people, 5.81%
Iron Deficiency: 5 people, 5.81%
High Blood Cholesterol: 4 people, 4.65%
Psoriatic Arthropathy (inflammation of the skin and joints with kin condition which typically causes patches (plaques) of red, scaly skin to develop): 4 people, 4.65%

* Approximation only. Some reports may have incomplete information.

Do you take Codeine and have Breast cancer?

- Check whether Breast cancer 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 Codeine:

Codeine (42,342 reports)

Breast cancer treatments and more:

Breast cancer (266,434 reports)

Browse all side effects of Codeine:

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 cancer:

Breast cancer (1,293 drugs)

Browse all the conditions that are associated with Breast cancer:

Breast cancer (1,670 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on codeine sulfate (the active ingredients of Codeine) and Codeine (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.