Zofran and Electrocardiogram repolarisation abnormality - a phase IV clinical study of FDA data

Summary:

Electrocardiogram repolarisation abnormality is reported as a side effect among people who take Zofran (ondansetron hydrochloride), especially for people who are male, 50-59 old, have been taking the drug for < 1 month also take Lasix, and have Acute lymphocytic leukemia (all).

The phase IV clinical study analyzes which people have Electrocardiogram repolarisation abnormality when taking Zofran. It is created by eHealthMe based on reports of 93,713 people who have side effects when taking Zofran from the FDA, and is updated regularly.

What is Zofran?

Zofran has active ingredients of ondansetron hydrochloride. It is often used in nausea. eHealthMe is studying from 94,987 Zofran users. Check the latest studies of Zofran.

What is Electrocardiogram repolarisation abnormality?

Electrocardiogram repolarisation abnormality is found to be associated with 132 drugs and 354 conditions by eHealthMe. Check the latest studies of Electrocardiogram repolarisation abnormality.

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 Aug, 22, 2026

93,713 people reported to have side effects when taking Zofran.
Among them, 11 people (0.01%) have Electrocardiogram repolarisation abnormality.

Could Zofran cause Electrocardiogram repolarisation abnormality?

Among these 11 people:

How long have people been on Zofran when they have Electrocardiogram repolarisation abnormality? *

What is the gender of people who have Electrocardiogram repolarisation abnormality when taking Zofran? *

female: 50 %
male: 50 %

What is the age of people who have Electrocardiogram repolarisation abnormality when taking Zofran? *

What are other drugs people take besides Zofran? *

What are other side effects people have besides Electrocardiogram repolarisation abnormality? *

Sinus Tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node): 5 people, 45.45%
Fatigue (feeling of tiredness): 3 people, 27.27%
Chest Pain: 3 people, 27.27%
Presyncope: 3 people, 27.27%
Headache (pain in head): 3 people, 27.27%
Pleural Effusion (water on the lungs): 3 people, 27.27%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 3 people, 27.27%
High Blood Pressure: 3 people, 27.27%
Enlarged Heart: 3 people, 27.27%
Electrocardiogram St-T Change: 3 people, 27.27%

What are the existing conditions these people have? *

High Blood Pressure: 4 people, 36.36%
Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 4 people, 36.36%
Breast Cancer: 3 people, 27.27%
Metastatic Malignant Melanoma (spreadable cancer tumour of melanine): 1 person, 9.09%
Fever: 1 person, 9.09%
Diarrhea: 1 person, 9.09%
Cardiac Failure Congestive: 1 person, 9.09%
Aplasia (defective development or congenital absence of an organ or tissue): 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Zofran and have Electrocardiogram repolarisation abnormality?

- Check whether Electrocardiogram repolarisation abnormality is associated with a drug or a condition
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Related studies:

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

Zofran (94,987 reports)

Electrocardiogram repolarisation abnormality treatments and more:

Electrocardiogram repolarisation abnormality (1,018 reports)

How severe was Electrocardiogram repolarisation abnormality and when was it recovered:

Electrocardiogram repolarisation abnormality in Zofran

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

Electrocardiogram repolarisation abnormality and drugs with ingredients of ondansetron 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 Zofran:

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 Electrocardiogram repolarisation abnormality:

Electrocardiogram repolarisation abnormality (132 drugs)

Browse all the conditions that are associated with Electrocardiogram repolarisation abnormality:

Electrocardiogram repolarisation abnormality (354 conditions)

How the study uses the data?

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