Selenium and Heart rate irregular - a phase IV clinical study of FDA data

Summary:

Heart rate irregular is reported as a side effect among people who take Selenium (selenium), especially for people who are female, 60+ old, also take Vitamin C, and have Narcolepsy.

The phase IV clinical study analyzes which people have Heart rate irregular when taking Selenium. It is created by eHealthMe based on reports of 5,049 people who have side effects when taking Selenium from the FDA, and is updated regularly.

What is Selenium?

Selenium has active ingredients of selenium. It is often used in vitamin supplementation. eHealthMe is studying from 5,314 Selenium users. Check the latest studies of Selenium.

What is Heart rate irregular?

Heart rate irregular is found to be associated with 1,517 drugs and 1,772 conditions by eHealthMe. Check the latest studies of Heart rate irregular.

On Jun, 18, 2026

5,049 people reported to have side effects when taking Selenium.
Among them, 19 people (0.38%) have Heart rate irregular.

Could Selenium cause Heart rate irregular?

Among these 19 people:

What is the gender of people who have Heart rate irregular when taking Selenium? *

female: 88.89 %
male: 11.11 %

What is the age of people who have Heart rate irregular when taking Selenium? *

What are other drugs people take besides Selenium? *

What are other side effects people have besides Heart rate irregular? *

High Blood Pressure: 5 people, 26.32%
Dizziness: 5 people, 26.32%
Kidney Stones: 4 people, 21.05%
Cardiac Arrest: 4 people, 21.05%
Feeling Abnormal: 4 people, 21.05%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 15.79%
Fatigue (feeling of tiredness): 3 people, 15.79%
Muscle Spasms (muscle contraction): 3 people, 15.79%
Headache (pain in head): 3 people, 15.79%
Cough: 3 people, 15.79%

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 26.32%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 4 people, 21.05%
Hyperlipidaemia (presence of excess lipids in the blood): 2 people, 10.53%
Takayasu's Arteritis (an inflammation of the aorta -- the artery that carries blood from the heart to the rest of the body): 2 people, 10.53%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 2 people, 10.53%
Urinary Tract Infection: 1 person, 5.26%
Basedow's Disease (autoimmune disease where the thyroid is overactive, producing an excessive amount of thyroid hormones): 1 person, 5.26%
Blood Pressure Abnormal: 1 person, 5.26%
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 1 person, 5.26%
Drowsiness: 1 person, 5.26%

* Approximation only. Some reports may have incomplete information.

Do you take Selenium and have Heart rate irregular?

- Check whether Heart rate irregular 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 Selenium:

Selenium (5,314 reports)

Browse all side effects of Selenium:

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 Heart rate irregular:

Heart rate irregular (1,517 drugs)

Browse all the conditions that are associated with Heart rate irregular:

Heart rate irregular (1,772 conditions)

How the study uses the data?

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