Rythmol and Panic attacks - a phase IV clinical study of FDA data

Summary:

Panic attacks is reported as a side effect among people who take Rythmol (propafenone hydrochloride), especially for people who are male, 60+ old, have been taking the drug for 1 - 6 months also take Aspirin, and have Coronary heart disease.

The phase IV clinical study analyzes which people have Panic attacks when taking Rythmol. It is created by eHealthMe based on reports of 3,422 people who have side effects when taking Rythmol from the FDA, and is updated regularly.

What is Rythmol?

Rythmol has active ingredients of propafenone hydrochloride. It is often used in atrial fibrillation/flutter. eHealthMe is studying from 3,638 Rythmol users. Check the latest studies of Rythmol.

What is Panic attacks?

Panic attacks is found to be associated with 2,181 drugs and 2,075 conditions by eHealthMe. Check the latest studies of Panic attacks.

On Jun, 25, 2026

3,422 people reported to have side effects when taking Rythmol.
Among them, 13 people (0.38%) have Panic attacks.

Among these 13 people:

How long have people been on Rythmol when they have Panic attacks? *

What is the gender of people who have Panic attacks when taking Rythmol? *

female: 30.77 %
male: 69.23 %

What is the age of people who have Panic attacks when taking Rythmol? *

What are other drugs people take besides Rythmol? *

What are other side effects people have besides Panic attacks? *

Dizziness: 5 people, 38.46%
Dyspnea (difficult or laboured breathing): 3 people, 23.08%
Confusional State: 3 people, 23.08%
Stress And Anxiety: 2 people, 15.38%
Agitation (state of anxiety or nervous excitement): 2 people, 15.38%
Fall: 2 people, 15.38%
Wound: 1 person, 7.69%
Depression: 1 person, 7.69%
Ear Disorder: 1 person, 7.69%
Dry Mouth: 1 person, 7.69%

What are the existing conditions these people have? *

Coronary Heart Disease (narrowing or blockage of the coronary arteries): 4 people, 30.77%
Pain: 3 people, 23.08%
Left Ventricular Dysfunction: 3 people, 23.08%
Stress And Anxiety: 1 person, 7.69%
Peripheral Neuropathy (damage to nerves of the peripheral nervous system): 1 person, 7.69%
Muscle Spasms (muscle contraction): 1 person, 7.69%
High Blood Cholesterol: 1 person, 7.69%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 7.69%
Cardiac Failure Congestive: 1 person, 7.69%
Cardiac Disorder: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Rythmol and have Panic attacks?

- Check whether Panic attacks 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 Rythmol:

Rythmol (3,638 reports)

Panic attacks treatments and more:

Panic attacks (65,704 reports)

Browse all side effects of Rythmol:

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 Panic attacks:

Panic attacks (2,181 drugs)

Browse all the conditions that are associated with Panic attacks:

Panic attacks (2,075 conditions)

Related publications that referenced our studies

Tesic D, Kostic M, Paunovic D, Jankovic SM, "Analysis of the cost–effectiveness of dronedarone versus amiodarone, propafenone, and sotalol in patients with atrial fibrillation: results for Serbia", Kardiologia Polska (Polish Heart Journal), 2016 Jan .
Tesic D, Kostic M, Paunovic D, Jankovic SM, "Analysis of the cost–effectiveness of dronedarone versus amiodarone, propafenone, and sotalol in patients with atrial fibrillation: results for Serbia", Kardiologia Polska (Polish Heart Journal), 2016 Jan .

How the study uses the data?

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