Q10 and International normalised ratio increased - a phase IV clinical study of FDA data

Summary:

International normalised ratio increased is reported as a side effect among people who take Q10 (coenzyme q - 10), especially for people who are female, 60+ old, also take Coumadin, and have Atrial fibrillation/flutter.

The phase IV clinical study analyzes which people have International normalised ratio increased when taking Q10. It is created by eHealthMe based on reports of 32,909 people who have side effects when taking Q10 from the FDA, and is updated regularly.

What is Q10?

Q10 has active ingredients of coenzyme q - 10. eHealthMe is studying from 34,261 Q10 users. Check the latest studies of Q10.

What is International normalised ratio increased?

International normalised ratio increased is found to be associated with 1,333 drugs and 1,727 conditions by eHealthMe. Check the latest studies of International normalised ratio increased.

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 Sep, 03, 2026

32,909 people reported to have side effects when taking Q10.
Among them, 51 people (0.15%) have International normalised ratio increased.

Could Q10 cause International normalised ratio increased?

Among these 51 people:

What is the gender of people who have International normalised ratio increased when taking Q10? *

female: 59.18 %
male: 40.82 %

What is the age of people who have International normalised ratio increased when taking Q10? *

What are other drugs people take besides Q10? *

What are other side effects people have besides International normalised ratio increased? *

Fatigue (feeling of tiredness): 10 people, 19.61%
Urinary Tract Infection: 8 people, 15.69%
Nausea (feeling of having an urge to vomit): 8 people, 15.69%
Anaemia (lack of blood): 7 people, 13.73%
Weakness: 7 people, 13.73%
Nausea And Vomiting: 7 people, 13.73%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 6 people, 11.76%
Haemoglobin Decreased: 6 people, 11.76%
Haematuria (presence of blood in urine): 6 people, 11.76%
Hypokalemia (low potassium): 6 people, 11.76%

What are the existing conditions these people have? *

Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 17 people, 33.33%
High Blood Cholesterol: 6 people, 11.76%
Pulmonary Hypertension (increase in blood pressure in the lung artery): 4 people, 7.84%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 5.88%
Nausea (feeling of having an urge to vomit): 3 people, 5.88%
Nausea And Vomiting: 3 people, 5.88%
Deep Venous Thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis): 3 people, 5.88%
Metastatic Renal Cell Carcinoma (spreadable kidney cell tumour): 3 people, 5.88%
Fallopian Tube Cancer (cancer of fallopian tube): 3 people, 5.88%
Hypokalemia (low potassium): 3 people, 5.88%

* Approximation only. Some reports may have incomplete information.

Do you take Q10 and have International normalised ratio increased?

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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Q10:

Q10 (34,261 reports)

International normalised ratio increased treatments and more:

International normalised ratio increased (40,071 reports)

How severe was International normalised ratio increased and when was it recovered:

International normalised ratio increased in Q10

Expand to all the drugs that have ingredients of coenzyme q - 10:

International normalised ratio increased and drugs with ingredients of coenzyme q - 10 (66 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 Q10:

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 International normalised ratio increased:

International normalised ratio increased (1,333 drugs)

Browse all the conditions that are associated with International normalised ratio increased:

International normalised ratio increased (1,727 conditions)

Related publications that referenced our studies

Peel MM, Cooke M, Lewis-Peel HJ, Lea RA, Moyle W, "A randomized controlled trial of coenzyme Q 10 for fatigue in the late-onset sequelae of poliomyelitis", Complementary therapies in medicine, 2015 Dec .
Peel MM, Cooke M, Lewis-Peel HJ, Lea RA, Moyle W, "A randomized controlled trial of coenzyme Q 10 for fatigue in the late-onset sequelae of poliomyelitis", Complementary therapies in medicine, 2015 Dec .

How the study uses the data?

The study uses data from the FDA. It is based on coenzyme q - 10 (the active ingredients of Q10) and Q10 (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.