Coumadin and Investigation abnormal - a phase IV clinical study of FDA data

Summary:

Investigation abnormal is reported as a side effect among people who take Coumadin (warfarin sodium), especially for people who are female, 60+ old, have been taking the drug for 1 - 6 months also take Flolan, and have Primary pulmonary hypertension.

The phase IV clinical study analyzes which people have Investigation abnormal when taking Coumadin. It is created by eHealthMe based on reports of 128,882 people who have side effects when taking Coumadin from the FDA, and is updated regularly.

What is Coumadin?

Coumadin has active ingredients of warfarin sodium. It is often used in blood clots. eHealthMe is studying from 133,228 Coumadin users. Check the latest studies of Coumadin.

What is Investigation abnormal?

Investigation abnormal is found to be associated with 312 drugs and 252 conditions by eHealthMe. Check the latest studies of Investigation abnormal.

On Jul, 07, 2026

128,882 people reported to have side effects when taking Coumadin.
Among them, 80 people (0.06%) have Investigation abnormal.

Could Coumadin cause Investigation abnormal?

Among these 80 people:

How long have people been on Coumadin when they have Investigation abnormal? *

What is the gender of people who have Investigation abnormal when taking Coumadin? *

female: 63.29 %
male: 36.71 %

What is the age of people who have Investigation abnormal when taking Coumadin? *

What are other drugs people take besides Coumadin? *

What are other side effects people have besides Investigation abnormal? *

Dyspnea (difficult or laboured breathing): 27 people, 33.75%
Diarrhea: 18 people, 22.50%
Headache (pain in head): 15 people, 18.75%
Nausea (feeling of having an urge to vomit): 15 people, 18.75%
Chest Pain: 12 people, 15.00%
Pain In Jaw: 12 people, 15.00%
Pneumonia: 11 people, 13.75%
Dizziness: 11 people, 13.75%
Fluid Retention (an abnormal accumulation of fluid in the blood): 10 people, 12.50%
Device Related Infection: 10 people, 12.50%

What are the existing conditions these people have? *

Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 40 people, 50.00%
Cor Pulmonale Chronic (long lasting enlargement of the right ventricle of the heart): 12 people, 15.00%
Pulmonary Hypertension (increase in blood pressure in the lung artery): 7 people, 8.75%
Asthma: 4 people, 5.00%
Cardiac Disorder: 2 people, 2.50%
Gastric Disorder (disease of stomach): 2 people, 2.50%
Cardiac Failure Congestive: 1 person, 1.25%
Haemorrhage (bleeding): 1 person, 1.25%
Dyspnea (difficult or laboured breathing): 1 person, 1.25%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 1 person, 1.25%

* Approximation only. Some reports may have incomplete information.

Do you take Coumadin and have Investigation abnormal?

- Check whether Investigation abnormal is associated with a drug or a condition
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Related studies:

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

Coumadin (133,228 reports)

Browse all side effects of Coumadin:

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 Investigation abnormal:

Investigation abnormal (312 drugs)

Browse all the conditions that are associated with Investigation abnormal:

Investigation abnormal (252 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on warfarin sodium (the active ingredients of Coumadin) and Coumadin (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.