Famvir and Kidney infection (pyelonephritis) - a phase IV clinical study of FDA data

Summary:

Kidney infection (pyelonephritis) is reported as a side effect among people who take Famvir (famciclovir), especially for people who are female, 50-59 old, also take Aredia, and have Hyperlipidaemia.

The phase IV clinical study analyzes which people have Kidney infection (pyelonephritis) when taking Famvir. It is created by eHealthMe based on reports of 2,955 people who have side effects when taking Famvir from the FDA, and is updated regularly.

What is Famvir?

Famvir has active ingredients of famciclovir. It is often used in herpes labialis (oral herpes simplex). eHealthMe is studying from 3,061 Famvir users. Check the latest studies of Famvir.

What is Kidney infection (pyelonephritis)?

Kidney infection (pyelonephritis) is found to be associated with 970 drugs and 1,509 conditions by eHealthMe. Check the latest studies of Kidney infection (pyelonephritis).

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 Aug, 24, 2026

2,955 people reported to have side effects when taking Famvir.
Among them, 16 people (0.54%) have Kidney infection (pyelonephritis).

Could Famvir cause Kidney infection (pyelonephritis)?

Among these 16 people:

What is the gender of people who have Kidney infection (pyelonephritis) when taking Famvir? *

female: 100 %
male: 0.0 %

What is the age of people who have Kidney infection (pyelonephritis) when taking Famvir? *

What are other drugs people take besides Famvir? *

What are other side effects people have besides Kidney infection (pyelonephritis)? *

Pain: 16 people, 100.00%
Neuropathy Peripheral (surface nerve damage): 16 people, 100.00%
Hypoaesthesia (reduced sense of touch or sensation): 16 people, 100.00%
Plasmacytoma (neoplasm of plasma cells (usually in bone marrow)): 16 people, 100.00%
Deformity (disfigurement): 16 people, 100.00%
Infection: 16 people, 100.00%
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 16 people, 100.00%
Stress And Anxiety: 16 people, 100.00%
Emotional Distress: 16 people, 100.00%
Weakness: 16 people, 100.00%

What are the existing conditions these people have? *

Systemic Lupus Erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 1 person, 6.25%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 6.25%
Multiple Myeloma (cancer of the plasma cells): 1 person, 6.25%
Hyperlipidaemia (presence of excess lipids in the blood): 1 person, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Famvir and have Kidney infection (pyelonephritis)?

- Check whether Kidney infection (pyelonephritis) 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 Famvir:

Famvir (3,061 reports)

Browse all side effects of Famvir:

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 Kidney infection (pyelonephritis):

Kidney infection (pyelonephritis) (970 drugs)

Browse all the conditions that are associated with Kidney infection (pyelonephritis):

Kidney infection (pyelonephritis) (1,509 conditions)

How the study uses the data?

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