Viread and Bradycardia - a phase IV clinical study of FDA data

Summary:

Bradycardia is reported as a side effect among people who take Viread (tenofovir disoproxil fumarate), especially for people who are male, 50-59 old, have been taking the drug for < 1 month also take Epivir, and have High blood pressure.

The phase IV clinical study analyzes which people have Bradycardia when taking Viread. It is created by eHealthMe based on reports of 51,434 people who have side effects when taking Viread from the FDA, and is updated regularly.

What is Viread?

Viread has active ingredients of tenofovir disoproxil fumarate. It is often used in hepatitis b. eHealthMe is studying from 51,542 Viread users. Check the latest studies of Viread.

What is Bradycardia?

Bradycardia (abnormally slow heart action) is found to be associated with 1,921 drugs and 3,119 conditions by eHealthMe. Check the latest studies of Bradycardia.



On Jul, 31, 2026

51,434 people reported to have side effects when taking Viread.
Among them, 49 people (0.1%) have Bradycardia.

Could Viread cause Bradycardia?

Among these 49 people:

How long have people been on Viread when they have Bradycardia? *

  • < 1 month: 68.75 %
  • 1 - 6 months: 6.25 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 25.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

What is the gender of people who have Bradycardia when taking Viread? *

  • female: 24.49 %
  • male: 75.51 %

What is the age of people who have Bradycardia when taking Viread? *

  • 0-1: 5.0 %
  • 2-9: 0.0 %
  • 10-19: 0.0 %
  • 20-29: 17.5 %
  • 30-39: 2.5 %
  • 40-49: 17.5 %
  • 50-59: 35.0 %
  • 60+: 22.5 %

What are other drugs people take besides Viread? *

  1. Epivir: 25 people, 51.02%
  2. Kaletra: 23 people, 46.94%
  3. Reyataz: 14 people, 28.57%
  4. Norvir: 12 people, 24.49%
  5. Lamivudine: 9 people, 18.37%
  6. Retrovir: 8 people, 16.33%
  7. Bactrim: 8 people, 16.33%
  8. Viracept: 8 people, 16.33%
  9. Ziagen: 6 people, 12.24%
  10. Folic Acid: 6 people, 12.24%

What are other side effects people have besides Bradycardia? *

  1. Ventricular Extrasystoles (premature cardiac contraction): 17 people, 34.69%
  2. Diarrhea: 15 people, 30.61%
  3. Nausea And Vomiting: 12 people, 24.49%
  4. Extrasystoles: 12 people, 24.49%
  5. Nausea (feeling of having an urge to vomit): 12 people, 24.49%
  6. Dizziness: 11 people, 22.45%
  7. Chest Pain: 10 people, 20.41%
  8. Sick Sinus Syndrome (a collection of heart rhythm disorders): 10 people, 20.41%
  9. Headache (pain in head): 9 people, 18.37%
  10. Heart Palpitations (feelings or sensations that your heart is pounding or racing): 8 people, 16.33%

What are the existing conditions these people have? *

  1. High Blood Pressure: 4 people, 8.16%
  2. Diabetes: 3 people, 6.12%
  3. Hyperlipidaemia (presence of excess lipids in the blood): 2 people, 4.08%
  4. Hepatitis C: 1 person, 2.04%
  5. Constipation: 1 person, 2.04%
  6. Cough: 1 person, 2.04%
  7. Cytomegalovirus Chorioretinitis (infection of choroid and retina of the eye from virus): 1 person, 2.04%
  8. Dyslipidaemia (abnormal amount of lipids): 1 person, 2.04%
  9. Enlarged Prostate: 1 person, 2.04%
  10. Fibromyalgia (a long-term condition which causes pain all over the body): 1 person, 2.04%

* Approximation only. Some reports may have incomplete information.

Do you take Viread and have Bradycardia?

- Check whether Bradycardia 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 Viread:

Bradycardia treatments and more:

How severe was Bradycardia and when was it recovered:

Expand to all the drugs that have ingredients of tenofovir disoproxil fumarate:

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 Viread:

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 Bradycardia:

Browse all the conditions that are associated with Bradycardia:

Related publications that referenced our studies


How the study uses the data?

The study uses data from the FDA. It is based on tenofovir disoproxil fumarate (the active ingredients of Viread) and Viread (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.



Recent studies on eHealthMe: