Delsym and Arrhythmias - a phase IV clinical study of FDA data

Summary:

Arrhythmias is reported as a side effect among people who take Delsym (dextromethorphan polistirex), especially for people who are female, 60+ old, also take Tylenol, and have Insomnia.

The phase IV clinical study analyzes which people have Arrhythmias when taking Delsym. It is created by eHealthMe based on reports of 4,675 people who have side effects when taking Delsym from the FDA, and is updated regularly.

What is Delsym?

Delsym has active ingredients of dextromethorphan polistirex. It is often used in cough. eHealthMe is studying from 5,033 Delsym users. Check the latest studies of Delsym.

What is Arrhythmias?

Arrhythmias (irregular heartbeat) is found to be associated with 2,759 drugs and 4,837 conditions by eHealthMe. Check the latest studies of Arrhythmias.

On Jul, 10, 2026

4,675 people reported to have side effects when taking Delsym.
Among them, 17 people (0.36%) have Arrhythmias.

Among these 17 people:

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

female: 76.47 %
male: 23.53 %

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

What are other drugs people take besides Delsym? *

What are other side effects people have besides Arrhythmias? *

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): 5 people, 29.41%
Nausea (feeling of having an urge to vomit): 4 people, 23.53%
Fatigue (feeling of tiredness): 4 people, 23.53%
High Blood Pressure: 4 people, 23.53%
Stress And Anxiety: 4 people, 23.53%
Heart Rate Increased: 4 people, 23.53%
Emotional Disorder: 3 people, 17.65%
Nasopharyngitis (inflammation of the nasopharynx): 3 people, 17.65%
Confusional State: 3 people, 17.65%
Diarrhea: 3 people, 17.65%

What are the existing conditions these people have? *

Insomnia (sleeplessness): 3 people, 17.65%
Stress And Anxiety: 2 people, 11.76%
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 2 people, 11.76%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 2 people, 11.76%
Pulmonary Embolism (blockage of the main artery of the lung): 2 people, 11.76%
Pneumonia: 2 people, 11.76%
Pancreatic Carcinoma Metastatic (pancreatic cancer- metastatic): 2 people, 11.76%
Constipation: 2 people, 11.76%
Ovarian Cancer (cancer of ovary): 2 people, 11.76%
Fever: 2 people, 11.76%

* Approximation only. Some reports may have incomplete information.

Do you take Delsym 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 Delsym:

Delsym (5,033 reports)

Arrhythmias treatments and more:

Arrhythmias (177,908 reports)

Browse all side effects of Delsym:

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 (2,759 drugs)

Browse all the conditions that are associated with Arrhythmias:

Arrhythmias (4,837 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on dextromethorphan polistirex (the active ingredients of Delsym) and Delsym (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.