Cephalexin and Ventricular tachycardia - a phase IV clinical study of FDA data

Summary:

Ventricular tachycardia is reported as a side effect among people who take Cephalexin (cephalexin), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Digoxin, and have Atrial fibrillation/flutter.

The phase IV clinical study analyzes which people have Ventricular tachycardia when taking Cephalexin. It is created by eHealthMe based on reports of 29,149 people who have side effects when taking Cephalexin from the FDA, and is updated regularly.

What is Cephalexin?

Cephalexin has active ingredients of cephalexin. It is often used in infection. eHealthMe is studying from 30,580 Cephalexin users. Check the latest studies of Cephalexin.

What is Ventricular tachycardia?

Ventricular tachycardia (rapid heartbeat that originates in one of the lower chambers (the ventricles) of the heart) is found to be associated with 1,291 drugs and 2,096 conditions by eHealthMe. Check the latest studies of Ventricular tachycardia.

On Apr, 29, 2026

29,149 people reported to have side effects when taking Cephalexin.
Among them, 82 people (0.28%) have Ventricular tachycardia.

Could Cephalexin cause Ventricular tachycardia?

Among these 82 people:

How long have people been on Cephalexin when they have Ventricular tachycardia? *

What is the gender of people who have Ventricular tachycardia when taking Cephalexin? *

female: 40.24 %
male: 59.76 %

What is the age of people who have Ventricular tachycardia when taking Cephalexin? *

What are other drugs people take besides Cephalexin? *

What are other side effects people have besides Ventricular tachycardia? *

Fatigue (feeling of tiredness): 37 people, 45.12%
Cardiac Failure Congestive: 37 people, 45.12%
Pain: 33 people, 40.24%
Acute Kidney Failure: 31 people, 37.80%
Chest Pain: 30 people, 36.59%
Weakness: 30 people, 36.59%
Dyspnea (difficult or laboured breathing): 27 people, 32.93%
Dizziness: 26 people, 31.71%
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): 26 people, 31.71%
Stress And Anxiety: 24 people, 29.27%

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): 11 people, 13.41%
Cardiac Failure Congestive: 6 people, 7.32%
Arrhythmias (irregular heartbeat): 4 people, 4.88%
Pain: 3 people, 3.66%
Cardiac Failure: 2 people, 2.44%
Cardiac Disorder: 2 people, 2.44%
High Blood Pressure: 2 people, 2.44%
Depression: 2 people, 2.44%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 2 people, 2.44%
Left Ventricular Dysfunction: 2 people, 2.44%

* Approximation only. Some reports may have incomplete information.

Do you take Cephalexin and have Ventricular tachycardia?

- Check whether Ventricular tachycardia 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 Cephalexin:

Cephalexin (30,580 reports)

Browse all side effects of Cephalexin:

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 Ventricular tachycardia:

Ventricular tachycardia (1,291 drugs)

Browse all the conditions that are associated with Ventricular tachycardia:

Ventricular tachycardia (2,096 conditions)

Related publications that referenced our studies

Amit K J Mandal, Umar F Khan, Constantinos G Missouris, "Ventricular tachycardia in a patient with sigmoid volvulus on treatment with donepezil", Clinical Toxicology, 2019 Jan .
Agrawal A, Rao M, Jasdanwala S, Mathur A, Eng M, "Cephalexin Induced Cholestatic Jaundice", Case reports in gastrointestinal medicine, 2014 Aug .
Amit K J Mandal, Umar F Khan, Constantinos G Missouris, "Ventricular tachycardia in a patient with sigmoid volvulus on treatment with donepezil", Clinical Toxicology, 2019 Jan .
Agrawal A, Rao M, Jasdanwala S, Mathur A, Eng M, "Cephalexin Induced Cholestatic Jaundice", Case reports in gastrointestinal medicine, 2014 Aug .

How the study uses the data?

The study uses data from the FDA. It is based on cephalexin (the active ingredients of Cephalexin) and Cephalexin (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.