Valtrex and Acetaminophen drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Valtrex (valacyclovir hydrochloride) and Acetaminophen (acetaminophen). Common drug interactions include diarrhoea among females and neutropenia among males.
The phase IV clinical study analyzes what interactions people have when they take Valtrex and Acetaminophen. It is created by eHealthMe based on reports of 955 people who take the same drugs 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 39,999 Valtrex users. Check the latest studies of Valtrex.
What is Acetaminophen?
Acetaminophen has active ingredients of acetaminophen. It is often used in pain. eHealthMe is studying from 183,077 Acetaminophen users. Check the latest studies of Acetaminophen.
955 people who take Valtrex and Acetaminophen together, and have interactions are studied.

What are the common drug interactions of Valtrex and Acetaminophen, by gender? *
What are the common drug interactions of Valtrex and Acetaminophen, by age (0-1 to 60+)? *
What are the existing conditions these people have? *
* Approximation only. Some reports may have incomplete information.
Do you take Valtrex and Acetaminophen?
- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously
Related studies:
Effectiveness of, side effects of, and alternative drugs to the 2 drugs:
- Valtrex (39,999 reports)
- Acetaminophen (183,077 reports)
Browse all drug interactions of Valtrex and Acetaminophen:
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 zSub-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 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 zBrowse all side effects of Acetaminophen:
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 zBrowse all interactions between Valtrex and drugs from A to Z:
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 zBrowse all interactions between Acetaminophen and drugs from A to Z:
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 zHow the study uses the data?
The study uses data from the FDA. It is based on valacyclovir hydrochloride and acetaminophen (the active ingredients of Valtrex and Acetaminophen, respectively), and Valtrex and Acetaminophen (the brand names). 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.
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