Famciclovir and Fainting - a phase IV clinical study of FDA data

Summary:

Fainting is reported as a side effect among people who take Famciclovir (famciclovir), especially for people who are male, 60+ old, have been taking the drug for 1 - 6 months also take Dexamethasone, and have Metastases to bone.

The phase IV clinical study analyzes which people have Fainting when taking Famciclovir. It is created by eHealthMe based on reports of 3,287 people who have side effects when taking Famciclovir from the FDA, and is updated regularly.

What is Famciclovir?

Famciclovir has active ingredients of famciclovir. It is often used in herpes zoster. eHealthMe is studying from 3,389 Famciclovir users. Check the latest studies of Famciclovir.

What is Fainting?

Fainting (loss of consciousness and postural tone) is found to be associated with 2,458 drugs and 3,547 conditions by eHealthMe. Check the latest studies of Fainting.

On Jul, 17, 2026

3,287 people reported to have side effects when taking Famciclovir.
Among them, 38 people (1.16%) have Fainting.

Among these 38 people:

How long have people been on Famciclovir when they have Fainting? *

What is the gender of people who have Fainting when taking Famciclovir? *

female: 18.92 %
male: 81.08 %

What is the age of people who have Fainting when taking Famciclovir? *

What are other drugs people take besides Famciclovir? *

Zometa: 16 people, 42.11%
Dexamethasone: 16 people, 42.11%
Percocet: 15 people, 39.47%
Nystatin: 15 people, 39.47%
Zocor: 15 people, 39.47%
Amoxicillin: 15 people, 39.47%
Aspirin: 15 people, 39.47%
Detrol: 14 people, 36.84%
Restoril: 14 people, 36.84%
Clopidogrel Bisulfate: 14 people, 36.84%

What are other side effects people have besides Fainting? *

Pain: 18 people, 47.37%
Fall: 16 people, 42.11%
Stress And Anxiety: 15 people, 39.47%
Infection: 15 people, 39.47%
Arrhythmias (irregular heartbeat): 15 people, 39.47%
Bone Disorder: 15 people, 39.47%
Bone Pain: 14 people, 36.84%
Oral Pain: 14 people, 36.84%
Oral Disorder (mouth disease): 14 people, 36.84%
Stomatitis (inflammation of mucous membrane of mouth): 14 people, 36.84%

What are the existing conditions these people have? *

Arthritis (form of joint disorder that involves inflammation of one or more joints): 14 people, 36.84%
Metastases To Bone (cancer spreads to bone): 14 people, 36.84%
Tumor Lysis Syndrome: 6 people, 15.79%
Multiple Myeloma (cancer of the plasma cells): 6 people, 15.79%
Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 6 people, 15.79%
High Blood Pressure: 4 people, 10.53%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 4 people, 10.53%
Lactose Intolerance (inability to digest lactose): 3 people, 7.89%
Bone Disorder: 3 people, 7.89%
Dry Eyes (lack of adequate tears): 3 people, 7.89%

* Approximation only. Some reports may have incomplete information.

Do you take Famciclovir and have Fainting?

- Check whether Fainting 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 Famciclovir:

Famciclovir (3,389 reports)

Fainting treatments and more:

Fainting (131,321 reports)

Browse all side effects of Famciclovir:

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 Fainting:

Fainting (2,458 drugs)

Browse all the conditions that are associated with Fainting:

Fainting (3,547 conditions)

How the study uses the data?

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