Fluorouracil and Tachyarrhythmia - a phase IV clinical study of FDA data

Summary:

Tachyarrhythmia is reported as a side effect among people who take Fluorouracil (fluorouracil), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Oxaliplatin, and have Colorectal cancer metastatic.

The phase IV clinical study analyzes which people have Tachyarrhythmia when taking Fluorouracil. It is created by eHealthMe based on reports of 96,940 people who have side effects when taking Fluorouracil from the FDA, and is updated regularly.

What is Fluorouracil?

Fluorouracil has active ingredients of fluorouracil. It is often used in colon cancer metastatic. eHealthMe is studying from 97,087 Fluorouracil users. Check the latest studies of Fluorouracil.

What is Tachyarrhythmia?

Tachyarrhythmia (disturbance of the heart rhythm in which the heart rate is abnormally increased) is found to be associated with 419 drugs and 901 conditions by eHealthMe. Check the latest studies of Tachyarrhythmia.

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

96,940 people reported to have side effects when taking Fluorouracil.
Among them, 22 people (0.02%) have Tachyarrhythmia.

Could Fluorouracil cause Tachyarrhythmia?

Among these 22 people:

How long have people been on Fluorouracil when they have Tachyarrhythmia? *

What is the gender of people who have Tachyarrhythmia when taking Fluorouracil? *

female: 45.45 %
male: 54.55 %

What is the age of people who have Tachyarrhythmia when taking Fluorouracil? *

What are other drugs people take besides Fluorouracil? *

What are other side effects people have besides Tachyarrhythmia? *

Dyspnea (difficult or laboured breathing): 3 people, 13.64%
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): 3 people, 13.64%
Pneumonia: 3 people, 13.64%
Gastritis (inflammation of stomach): 2 people, 9.09%
Circulatory Collapse: 2 people, 9.09%
Tachycardia Paroxysmal (a form of tachycardia which begins and ends in an acute (or paroxysmal) manner): 2 people, 9.09%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 2 people, 9.09%
Hypertensive Crisis: 2 people, 9.09%
Hypotension (abnormally low blood pressure): 2 people, 9.09%
Itching: 2 people, 9.09%

What are the existing conditions these people have? *

Colorectal Cancer Metastatic (cancer of colon and rectal spreads to other parts): 4 people, 18.18%
Oral Cancer (mouth cancer): 3 people, 13.64%
Rectosigmoid Cancer (cancer that originates in the rectum and sigmoid colon): 2 people, 9.09%
Oropharyngeal Cancer Recurrent (cancer of oropharynx reoccurs): 2 people, 9.09%
Anaemia (lack of blood): 2 people, 9.09%
Pancreatic Carcinoma (pancreatic cancer): 1 person, 4.55%
Non-Hodgkin's Lymphoma (malignant (cancer) cells form in the lymph system): 1 person, 4.55%
High Blood Pressure: 1 person, 4.55%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 1 person, 4.55%
Adenocarcinoma Pancreas (cancer of pancreas): 1 person, 4.55%

* Approximation only. Some reports may have incomplete information.

Do you take Fluorouracil and have Tachyarrhythmia?

- Check whether Tachyarrhythmia 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 Fluorouracil:

Fluorouracil (97,087 reports)

Tachyarrhythmia treatments and more:

Tachyarrhythmia (4,349 reports)

Browse all side effects of Fluorouracil:

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 Tachyarrhythmia:

Tachyarrhythmia (419 drugs)

Browse all the conditions that are associated with Tachyarrhythmia:

Tachyarrhythmia (901 conditions)

How the study uses the data?

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