Vitamin c and Atrioventricular block second degree - a phase IV clinical study of FDA data

Summary:

Atrioventricular block second degree is reported as a side effect among people who take Vitamin c (l-ascorbic acid), especially for people who are female, 50-59 old, also take Vitamin D, and have Multiple sclerosis.

The phase IV clinical study analyzes which people have Atrioventricular block second degree when taking Vitamin c. It is created by eHealthMe based on reports of 89,802 people who have side effects when taking Vitamin c from the FDA, and is updated regularly.

What is Vitamin c?

Vitamin c has active ingredients of l-ascorbic acid. It is often used in immune response. eHealthMe is studying from 92,472 Vitamin c users. Check the latest studies of Vitamin c.

What is Atrioventricular block second degree?

Atrioventricular block second degree (heart block second degree) is found to be associated with 373 drugs and 819 conditions by eHealthMe. Check the latest studies of Atrioventricular block second degree.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Sep, 01, 2026

89,802 people reported to have side effects when taking Vitamin c.
Among them, 11 people (0.01%) have Atrioventricular block second degree.

Could Vitamin c cause Atrioventricular block second degree?

Among these 11 people:

What is the gender of people who have Atrioventricular block second degree when taking Vitamin c? *

female: 72.73 %
male: 27.27 %

What is the age of people who have Atrioventricular block second degree when taking Vitamin c? *

What are other drugs people take besides Vitamin c? *

What are other side effects people have besides Atrioventricular block second degree? *

Bradycardia (abnormally slow heart action): 5 people, 45.45%
Atrioventricular Block First Degree (heart block first degree): 4 people, 36.36%
White Blood Cell Count Decreased: 3 people, 27.27%
Red Blood Cell Count Decreased: 3 people, 27.27%
Arrhythmias (irregular heartbeat): 3 people, 27.27%
Dizziness: 3 people, 27.27%
Drowsiness: 3 people, 27.27%
Drug Hypersensitivity: 3 people, 27.27%
Electrocardiogram Qt Prolonged: 3 people, 27.27%
Lymphocyte Count Decreased: 3 people, 27.27%

What are the existing conditions these people have? *

Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 18.18%
Weakness: 1 person, 9.09%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 1 person, 9.09%
Prostate Cancer Metastatic: 1 person, 9.09%
Prostate Cancer: 1 person, 9.09%
Pain: 1 person, 9.09%
Multiple Myeloma (cancer of the plasma cells): 1 person, 9.09%
Metastases To Liver (cancer spreads to liver): 1 person, 9.09%
Cushing's Syndrome (obesity, a rounded face, increased fat): 1 person, 9.09%
Chest Pain: 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Vitamin c and have Atrioventricular block second degree?

- Check whether Atrioventricular block second degree 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 Vitamin c:

Vitamin c (92,472 reports)

Browse all side effects of Vitamin c:

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 Atrioventricular block second degree:

Atrioventricular block second degree (373 drugs)

Browse all the conditions that are associated with Atrioventricular block second degree:

Atrioventricular block second degree (819 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on l-ascorbic acid (the active ingredients of Vitamin c) and Vitamin c (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.