Metronidazole and Herpes zoster - a phase IV clinical study of FDA data

Summary:

Herpes zoster is reported as a side effect among people who take Metronidazole (metronidazole), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Zometa, and have Cellulitis.

The phase IV clinical study analyzes which people have Herpes zoster when taking Metronidazole. It is created by eHealthMe based on reports of 58,146 people who have side effects when taking Metronidazole from the FDA, and is updated regularly.

What is Metronidazole?

Metronidazole has active ingredients of metronidazole. It is often used in vaginitis bacterial. eHealthMe is studying from 59,578 Metronidazole users. Check the latest studies of Metronidazole.

What is Herpes zoster?

Herpes zoster is found to be associated with 1,824 drugs and 2,166 conditions by eHealthMe. Check the latest studies of Herpes zoster.

On Jul, 22, 2026

58,146 people reported to have side effects when taking Metronidazole.
Among them, 262 people (0.45%) have Herpes zoster.

Could Metronidazole cause Herpes zoster?

Among these 262 people:

How long have people been on Metronidazole when they have Herpes zoster? *

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What is the gender of people who have Herpes zoster when taking Metronidazole? *

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* Approximation only. Some reports may have incomplete information.

Do you take Metronidazole and have Herpes zoster?

- Check whether Herpes zoster 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 Metronidazole:

Metronidazole (59,578 reports)

Herpes zoster treatments and more:

Herpes zoster (88,626 reports)

How severe was Herpes zoster and when was it recovered:

Herpes zoster in Metronidazole

Expand to all the drugs that have ingredients of metronidazole:

Herpes zoster and drugs with ingredients of metronidazole (481 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 Metronidazole:

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 Herpes zoster:

Herpes zoster (1,824 drugs)

Browse all the conditions that are associated with Herpes zoster:

Herpes zoster (2,166 conditions)

How the study uses the data?

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