Valacyclovir and Enterococcal bacteraemia - a phase IV clinical study of FDA data

Summary:

Enterococcal bacteraemia is reported as a side effect among people who take Valacyclovir (valacyclovir hydrochloride), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Furosemide, and have Multiple myeloma.

The phase IV clinical study analyzes which people have Enterococcal bacteraemia when taking Valacyclovir. It is created by eHealthMe based on reports of 41,259 people who have side effects when taking Valacyclovir from the FDA, and is updated regularly.

What is Valacyclovir?

Valacyclovir has active ingredients of valacyclovir hydrochloride. It is often used in genital herpes. eHealthMe is studying from 42,107 Valacyclovir users. Check the latest studies of Valacyclovir.

What is Enterococcal bacteraemia?

Enterococcal bacteraemia (presence of bacteria lactic acid in the blood) is found to be associated with 213 drugs and 330 conditions by eHealthMe. Check the latest studies of Enterococcal bacteraemia.

On Jul, 31, 2026

41,259 people reported to have side effects when taking Valacyclovir.
Among them, 11 people (0.03%) have Enterococcal bacteraemia.

Could Valacyclovir cause Enterococcal bacteraemia?

Among these 11 people:

How long have people been on Valacyclovir when they have Enterococcal bacteraemia? *

What is the gender of people who have Enterococcal bacteraemia when taking Valacyclovir? *

female: 33.33 %
male: 66.67 %

What is the age of people who have Enterococcal bacteraemia when taking Valacyclovir? *

What are other drugs people take besides Valacyclovir? *

What are other side effects people have besides Enterococcal bacteraemia? *

Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets): 3 people, 27.27%
Meningitis (inflammation of the protective membranes covering the brain and spinal cord, known collectively as the meninges): 3 people, 27.27%
Febrile Neutropenia (fever with reduced white blood cells): 2 people, 18.18%
Urinary Tract Infection Enterococcal: 1 person, 9.09%
Fluid Overload (too much fluid in the blood): 1 person, 9.09%
Anaemia (lack of blood): 1 person, 9.09%
Antimicrobial Susceptibility Test Resistant: 1 person, 9.09%
Blood Bilirubin Increased: 1 person, 9.09%
Blood Culture Positive: 1 person, 9.09%
Cytokine Release Syndrome (immediate complication occurring with the use of anti-t cell antibody infusions): 1 person, 9.09%

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 2 people, 18.18%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 1 person, 9.09%
Myeloid Leukaemia (a type of cancer in which the bone marrow makes abnormal myeloblasts): 1 person, 9.09%
Metastases To Meninges (cancer spreads to meninges): 1 person, 9.09%
Hypersensitivity: 1 person, 9.09%
High Blood Pressure: 1 person, 9.09%
Eye Inflammation: 1 person, 9.09%
Asthma: 1 person, 9.09%
Acute Myeloid Leukaemia (acute cancer in which the bone marrow makes abnormal myeloblasts): 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Valacyclovir and have Enterococcal bacteraemia?

- Check whether Enterococcal bacteraemia 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 Valacyclovir:

Valacyclovir (42,107 reports)

Browse all side effects of Valacyclovir:

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 Enterococcal bacteraemia:

Enterococcal bacteraemia (213 drugs)

Browse all the conditions that are associated with Enterococcal bacteraemia:

Enterococcal bacteraemia (330 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on valacyclovir hydrochloride (the active ingredients of Valacyclovir) and Valacyclovir (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.