Valtrex and Erection problems - a phase IV clinical study of FDA data

Summary:

Erection problems is reported as a side effect among people who take Valtrex (valacyclovir hydrochloride), especially for people who are 60+ old, have been taking the drug for 1 - 6 months also take Neurontin, and have Depression.

The phase IV clinical study analyzes which people have Erection problems when taking Valtrex. It is created by eHealthMe based on reports of 38,014 people who have side effects when taking Valtrex from the FDA, and is updated regularly.

What is Valtrex?

Valtrex has active ingredients of valacyclovir hydrochloride. It is often used in genital herpes. eHealthMe is studying from 40,000 Valtrex users. Check the latest studies of Valtrex.

What is Erection problems?

Erection problems is found to be associated with 1,270 drugs and 2,037 conditions by eHealthMe. Check the latest studies of Erection problems.

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 Jul, 15, 2026

38,014 people reported to have side effects when taking Valtrex.
Among them, 62 people (0.16%) have Erection problems.

Among these 62 people:

How long have people been on Valtrex when they have Erection problems? *

What is the age of people who have Erection problems when taking Valtrex? *

What are other drugs people take besides Valtrex? *

What are other side effects people have besides Erection problems? *

Depression: 21 people, 33.87%
Stress And Anxiety: 20 people, 32.26%
Headache (pain in head): 16 people, 25.81%
Thrombocytopenia (decrease of platelets in blood): 12 people, 19.35%
High Blood Pressure: 11 people, 17.74%
Heart Attack: 10 people, 16.13%
White Blood Cell Count Increased: 10 people, 16.13%
Libido Decreased (loss of interest in sex): 10 people, 16.13%
Fatigue (feeling of tiredness): 10 people, 16.13%
Cellulitis (infection under the skin): 10 people, 16.13%

What are the existing conditions these people have? *

High Blood Pressure: 14 people, 22.58%
Depression: 14 people, 22.58%
Multiple Myeloma (cancer of the plasma cells): 11 people, 17.74%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 8 people, 12.90%
Hypercalcaemia (elevated calcium (ca+) level in the blood): 7 people, 11.29%
Hypertonia (abnormal increase in muscle tension and a reduced ability of a muscle to stretch): 7 people, 11.29%
Metastases To Bone (cancer spreads to bone): 7 people, 11.29%
Oesophagitis (inflammation of oesophagus): 6 people, 9.68%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 6 people, 9.68%
Oral Herpes (viral infection of mouth): 5 people, 8.06%

* Approximation only. Some reports may have incomplete information.

Do you take Valtrex and have Erection problems?

- Check whether Erection problems is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Valtrex:

Valtrex (40,000 reports)

Browse all side effects of Valtrex:

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 Erection problems:

Erection problems (1,270 drugs)

Browse all the conditions that are associated with Erection problems:

Erection problems (2,037 conditions)

How the study uses the data?

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