Sudafed 12 hour and Bundle branch block right - a phase IV clinical study of FDA data

Summary:

Bundle branch block right is reported as a side effect among people who take Sudafed 12 hour (pseudoephedrine hydrochloride), especially for people who are male, 60+ old, also take Zoloft, and have Headache.

The phase IV clinical study analyzes which people have Bundle branch block right when taking Sudafed 12 hour. It is created by eHealthMe based on reports of 3,693 people who have side effects when taking Sudafed 12 hour from the FDA, and is updated regularly.

What is Sudafed 12 hour?

Sudafed 12 hour has active ingredients of pseudoephedrine hydrochloride. It is often used in nasal congestion. eHealthMe is studying from 4,687 Sudafed 12 hour users. Check the latest studies of Sudafed 12 hour.

What is Bundle branch block right?

Bundle branch block right (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the right ventricle) is found to be associated with 760 drugs and 895 conditions by eHealthMe. Check the latest studies of Bundle branch block right.

On Jul, 26, 2026

3,693 people reported to have side effects when taking Sudafed 12 hour.
Among them, 13 people (0.35%) have Bundle branch block right.

Could Sudafed 12 hour cause Bundle branch block right?

Among these 13 people:

What is the gender of people who have Bundle branch block right when taking Sudafed 12 hour? *

female: 23.08 %
male: 76.92 %

What is the age of people who have Bundle branch block right when taking Sudafed 12 hour? *

What are other drugs people take besides Sudafed 12 hour? *

What are other side effects people have besides Bundle branch block right? *

Enlarged Heart: 8 people, 61.54%
Dilatation Ventricular: 8 people, 61.54%
Tricuspid Valve Incompetence (inefficient heart valve): 7 people, 53.85%
Mitral Valve Incompetence (inefficient heart valve): 7 people, 53.85%
Pulmonary Valve Incompetence: 6 people, 46.15%
Developmental Delay: 6 people, 46.15%
Otitis Media (inflammation of the middle ear): 6 people, 46.15%
Failure To Thrive (inadequate weight gain and physical growth in children): 6 people, 46.15%
Tricuspid Valve Sclerosis (thickening of tricuspid valve): 6 people, 46.15%
Ventricular Hypertrophy (enlargement of ventricles (lower chambers) in the heart): 6 people, 46.15%

What are the existing conditions these people have? *

Headache (pain in head): 8 people, 61.54%
Sleep Disorder: 2 people, 15.38%
Metastases To Bone (cancer spreads to bone): 2 people, 15.38%
Depression: 2 people, 15.38%
Thyroid Diseases: 1 person, 7.69%
Stress And Anxiety: 1 person, 7.69%
Psychomotor Hyperactivity (feelings of extreme restlessness): 1 person, 7.69%
Lyme Disease (a bacterial infection that is spread to humans by infected ticks): 1 person, 7.69%
Logorrhea: 1 person, 7.69%
Heart Rate Irregular: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Sudafed 12 hour and have Bundle branch block right?

- Check whether Bundle branch block right 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 Sudafed 12 hour:

Sudafed 12 hour (4,687 reports)

Browse all side effects of Sudafed 12 hour:

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 Bundle branch block right:

Bundle branch block right (760 drugs)

Browse all the conditions that are associated with Bundle branch block right:

Bundle branch block right (895 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on pseudoephedrine hydrochloride (the active ingredients of Sudafed 12 hour) and Sudafed 12 hour (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.