Flecainide acetate and Laboratory test abnormal - a phase IV clinical study of FDA data

Summary:

Laboratory test abnormal is reported as a side effect among people who take Flecainide acetate (flecainide acetate), especially for people who are 60+ old, also take Xarelto, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Laboratory test abnormal when taking Flecainide acetate. It is created by eHealthMe based on reports of 6,177 people who have side effects when taking Flecainide acetate from the FDA, and is updated regularly.

What is Flecainide acetate?

Flecainide acetate has active ingredients of flecainide acetate. It is often used in atrial fibrillation/flutter. eHealthMe is studying from 7,176 Flecainide acetate users. Check the latest studies of Flecainide acetate.

What is Laboratory test abnormal?

Laboratory test abnormal is found to be associated with 1,188 drugs and 1,590 conditions by eHealthMe. Check the latest studies of Laboratory test abnormal.

On Jul, 28, 2026

6,177 people reported to have side effects when taking Flecainide acetate.
Among them, 11 people (0.18%) have Laboratory test abnormal.

Could Flecainide acetate cause Laboratory test abnormal?

Among these 11 people:

What is the age of people who have Laboratory test abnormal when taking Flecainide acetate? *

What are other drugs people take besides Flecainide acetate? *

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

Ventricular Extrasystoles (premature cardiac contraction): 3 people, 27.27%
Mitral Valve Incompetence (inefficient heart valve): 2 people, 18.18%
Supraventricular Extrasystoles (premature electrical impulse in the heart, generated above the level of the ventricle): 2 people, 18.18%
White Blood Cell Count Decreased: 1 person, 9.09%
Electrocardiogram St Segment Abnormal: 1 person, 9.09%
Electrocardiogram Qt Prolonged: 1 person, 9.09%
Electrocardiogram Qrs Complex Prolonged: 1 person, 9.09%
Electrocardiogram Qrs Complex Abnormal: 1 person, 9.09%
Ejection Fraction Decreased (systolic heart failure): 1 person, 9.09%
Drug Ineffective: 1 person, 9.09%

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 8 people, 72.73%
Pain: 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Flecainide acetate and have Laboratory test abnormal?

- Check whether Laboratory test abnormal 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 Flecainide acetate:

Flecainide acetate (7,176 reports)

Browse all side effects of Flecainide acetate:

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Browse all the drugs that are associated with Laboratory test abnormal:

Laboratory test abnormal (1,188 drugs)

Browse all the conditions that are associated with Laboratory test abnormal:

Laboratory test abnormal (1,590 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on flecainide acetate (the active ingredients of Flecainide acetate) and Flecainide acetate (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.