Coumadin and Thyroid function test abnormal - a phase IV clinical study of FDA data

Summary:

Thyroid function test 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 - 2 years also take Synthroid, and have Primary pulmonary hypertension.

The phase IV clinical study analyzes which people have Thyroid function test 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 133,226 Coumadin users. Check the latest studies of Coumadin.

What is Thyroid function test abnormal?

Thyroid function test abnormal is found to be associated with 1,706 drugs and 1,582 conditions by eHealthMe. Check the latest studies of Thyroid function test abnormal.

On Nov, 24, 2025

128,882 people reported to have side effects when taking Coumadin.
Among them, 229 people (0.18%) have Thyroid function test abnormal.

Could Coumadin cause Thyroid function test abnormal?

Among these 229 people:

How long have people been on Coumadin when they have Thyroid function test abnormal? *

What is the gender of people who have Thyroid function test abnormal when taking Coumadin? *

female: 71.17 %
male: 28.83 %

What is the age of people who have Thyroid function test abnormal when taking Coumadin? *

What are other drugs people take besides Coumadin? *

What are other side effects people have besides Thyroid function test abnormal? *

Pain: 66 people, 28.82%
Dyspnea (difficult or laboured breathing): 63 people, 27.51%
Stress And Anxiety: 59 people, 25.76%
Diarrhea: 58 people, 25.33%
Fatigue (feeling of tiredness): 52 people, 22.71%
Chest Pain: 46 people, 20.09%
Nausea (feeling of having an urge to vomit): 45 people, 19.65%
Joint Pain: 43 people, 18.78%
Weakness: 42 people, 18.34%
Anaemia (lack of blood): 40 people, 17.47%

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): 38 people, 16.59%
High Blood Cholesterol: 18 people, 7.86%
High Blood Pressure: 17 people, 7.42%
Multiple Myeloma (cancer of the plasma cells): 15 people, 6.55%
Osteoporosis (bones weak and more likely to break): 14 people, 6.11%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 12 people, 5.24%
Depression: 12 people, 5.24%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 9 people, 3.93%
Pulmonary Hypertension (increase in blood pressure in the lung artery): 9 people, 3.93%
Pain: 9 people, 3.93%

* Approximation only. Some reports may have incomplete information.

Do you take Coumadin and have Thyroid function test abnormal?

- Check whether Thyroid function test 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 (133,226 reports)

Browse all side effects of Coumadin:

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Common drugs associated with Thyroid function test abnormal:

Browse all the drugs that are associated with Thyroid function test abnormal:

Thyroid function test abnormal (1,706 drugs)

Common conditions associated with Thyroid function test abnormal:

Rheumatoid arthritis aggravated: 1,897 reports
Multiple sclerosis aggravated: 1,590 reports
Htn: 1,297 reports
Thyroid diseases: 1,022 reports
Thyroid function test abnormal: 1,020 reports
Hypothyroidy: 1,006 reports
Blood triglycerides abnormal: 848 reports
Dyslipidemia: 844 reports
Lipoprotein test: 797 reports
Osteoporosis: 789 reports

Browse all the conditions that are associated with Thyroid function test abnormal:

Thyroid function test abnormal (1,582 conditions)

Drugs similar to Coumadin and Thyroid function test abnormal :

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.