Focalin xr and Arrhythmias - a phase IV clinical study of FDA data

Summary:

Arrhythmias is reported as a side effect among people who take Focalin xr (dexmethylphenidate hydrochloride), especially for people who are male, 2-9 old, have been taking the drug for < 1 month also take Zyrtec, and have Hypersensitivity.

The phase IV clinical study analyzes which people have Arrhythmias when taking Focalin xr. It is created by eHealthMe based on reports of 1,589 people who have side effects when taking Focalin xr from the FDA, and is updated regularly.

What is Focalin xr?

Focalin xr has active ingredients of dexmethylphenidate hydrochloride. It is often used in attention deficit hyperactivity disorder. eHealthMe is studying from 2,159 Focalin xr users. Check the latest studies of Focalin xr.

What is Arrhythmias?

Arrhythmias (irregular heartbeat) is found to be associated with 2,754 drugs and 4,838 conditions by eHealthMe. Check the latest studies of Arrhythmias.

On Jul, 18, 2026

1,589 people reported to have side effects when taking Focalin xr.
Among them, 22 people (1.38%) have Arrhythmias.

Among these 22 people:

How long have people been on Focalin xr when they have Arrhythmias? *

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

female: 23.81 %
male: 76.19 %

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

What are other drugs people take besides Focalin xr? *

What are other side effects people have besides Arrhythmias? *

High Blood Pressure: 6 people, 27.27%
Stress And Anxiety: 5 people, 22.73%
Chest Pain: 5 people, 22.73%
Malaise (a feeling of general discomfort or uneasiness): 5 people, 22.73%
Dizziness: 4 people, 18.18%
Dyspnea (difficult or laboured breathing): 3 people, 13.64%
Pneumonia: 3 people, 13.64%
Pain In Extremity: 3 people, 13.64%
Pain: 3 people, 13.64%
Pseudomonal Bacteraemia (p. aeruginosa cause of bacterial infections of the blood): 3 people, 13.64%

What are the existing conditions these people have? *

Hypersensitivity: 2 people, 9.09%
Prostate Cancer Metastatic: 1 person, 4.55%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 4.55%
Drowsiness: 1 person, 4.55%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 1 person, 4.55%
Bipolar Ii Disorder (characterized by at least one episode of hypomania and at least one episode of major depression): 1 person, 4.55%
Bipolar Disorder (mood disorder): 1 person, 4.55%
Asthma: 1 person, 4.55%

* Approximation only. Some reports may have incomplete information.

Do you take Focalin xr 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 Focalin xr:

Focalin xr (2,159 reports)

Arrhythmias treatments and more:

Arrhythmias (177,908 reports)

How severe was Arrhythmias and when was it recovered:

Arrhythmias in Focalin xr

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

Arrhythmias and drugs with ingredients of dexmethylphenidate hydrochloride (60 reports)

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 Focalin xr:

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 (2,754 drugs)

Browse all the conditions that are associated with Arrhythmias:

Arrhythmias (4,838 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on dexmethylphenidate hydrochloride (the active ingredients of Focalin xr) and Focalin xr (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.