Quinapril 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 Quinapril (quinapril hydrochloride), especially for people who are male, 60+ old, also take Warfarin Sodium, and have Atrial fibrillation/flutter.

The phase IV clinical study analyzes which people have International normalised ratio increased when taking Quinapril. It is created by eHealthMe based on reports of 12,572 people who have side effects when taking Quinapril from the FDA, and is updated regularly.

What is Quinapril?

Quinapril has active ingredients of quinapril hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 12,927 Quinapril users. Check the latest studies of Quinapril.

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, 02, 2026

12,572 people reported to have side effects when taking Quinapril.
Among them, 77 people (0.61%) have International normalised ratio increased.

Could Quinapril cause International normalised ratio increased?

Among these 77 people:

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

female: 46.67 %
male: 53.33 %

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

What are other drugs people take besides Quinapril? *

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

Weakness: 13 people, 16.88%
Haemoglobin Decreased: 11 people, 14.29%
Nausea (feeling of having an urge to vomit): 11 people, 14.29%
Acute Kidney Failure: 11 people, 14.29%
Anaemia (lack of blood): 10 people, 12.99%
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): 10 people, 12.99%
Dyspnea (difficult or laboured breathing): 9 people, 11.69%
Dehydration (dryness resulting from the removal of water): 9 people, 11.69%
Haematocrit Decreased: 9 people, 11.69%
Hypotension (abnormally low blood pressure): 8 people, 10.39%

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): 13 people, 16.88%
Back Pain: 3 people, 3.90%
Chronic Kidney Disease: 3 people, 3.90%
Primary Pulmonary Hypertension (primary high blood pressure that affects the arteries in the lungs and the right side of your heart): 3 people, 3.90%
Renal Cancer Metastatic (cancer of kidney spreads to other part): 2 people, 2.60%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 2.60%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 2.60%
Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 2 people, 2.60%
Rectal Cancer (cancer of rectum): 1 person, 1.30%
Bone Disorder: 1 person, 1.30%

* Approximation only. Some reports may have incomplete information.

Do you take Quinapril and have International normalised ratio increased?

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Related studies:

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

Quinapril (12,927 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 Quinapril

Expand to all the drugs that have ingredients of quinapril hydrochloride:

International normalised ratio increased and drugs with ingredients of quinapril hydrochloride

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 Quinapril:

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)

How the study uses the data?

The study uses data from the FDA. It is based on quinapril hydrochloride (the active ingredients of Quinapril) and Quinapril (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.