Norpace cr and Arrhythmias - a phase IV clinical study of FDA data

Summary:

Arrhythmias is reported as a side effect among people who take Norpace cr (disopyramide phosphate), especially for people who are male, 60+ old, also take Allopurinol, and have Allergy to arthropod sting.

The phase IV clinical study analyzes which people have Arrhythmias when taking Norpace cr. It is created by eHealthMe based on reports of 228 people who have side effects when taking Norpace cr from the FDA, and is updated regularly.

What is Norpace cr?

Norpace cr has active ingredients of disopyramide phosphate. It is often used in atrial fibrillation/flutter. eHealthMe is studying from 244 Norpace cr users. Check the latest studies of Norpace cr.

What is Arrhythmias?

Arrhythmias (irregular heartbeat) is found to be associated with 2,757 drugs and 4,840 conditions by eHealthMe. Check the latest studies of Arrhythmias.

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

228 people reported to have side effects when taking Norpace cr.
Among them, 18 people (7.89%) have Arrhythmias.

Among these 18 people:

What is the gender of people who have Arrhythmias when taking Norpace cr? *

female: 50 %
male: 50 %

What is the age of people who have Arrhythmias when taking Norpace cr? *

What are other drugs people take besides Norpace cr? *

Allopurinol: 4 people, 22.22%
Actos: 3 people, 16.67%
Aspirin: 3 people, 16.67%
Coumadin: 2 people, 11.11%
Propranolol Hydrochloride: 2 people, 11.11%
Digoxin: 2 people, 11.11%
Gemfibrozil: 2 people, 11.11%
Librax: 1 person, 5.56%
Cardura: 1 person, 5.56%
Cordarone: 1 person, 5.56%

What are other side effects people have besides Arrhythmias? *

Ventricular Fibrillation (abnormally irregular heart rhythm): 4 people, 22.22%
Cardiac Arrest: 4 people, 22.22%
Heart Attack: 4 people, 22.22%
High Blood Cholesterol: 3 people, 16.67%
Renal Disorder (kidney disease): 3 people, 16.67%
Body Height Decreased: 3 people, 16.67%
Weakness: 3 people, 16.67%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 3 people, 16.67%
Drug Hypersensitivity: 2 people, 11.11%
Skin Blushing/flushing (a sudden reddening of the face, neck): 2 people, 11.11%

What are the existing conditions these people have? *

Cardiac Disorder: 4 people, 22.22%
Allergy To Arthropod Sting: 4 people, 22.22%
Hypertrophic Cardiomyopathy (a condition in which the heart muscle becomes abnormally thick): 2 people, 11.11%
High Blood Cholesterol: 2 people, 11.11%
Rickets (softening of bones): 1 person, 5.56%
Pain In Extremity: 1 person, 5.56%
Pain: 1 person, 5.56%
Neuralgia (pain in one or more nerves): 1 person, 5.56%
Neck Pain: 1 person, 5.56%
Limb Injury: 1 person, 5.56%

* Approximation only. Some reports may have incomplete information.

Do you take Norpace cr and have Arrhythmias?

- Check whether Arrhythmias 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 Norpace cr:

Norpace cr (244 reports)

Arrhythmias treatments and more:

Arrhythmias (177,908 reports)

Browse all side effects of Norpace cr:

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 Arrhythmias:

Arrhythmias (2,757 drugs)

Browse all the conditions that are associated with Arrhythmias:

Arrhythmias (4,840 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on disopyramide phosphate (the active ingredients of Norpace cr) and Norpace cr (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.