Valtrex and Licorice drug interactions - a phase IV clinical study of FDA data
Summary:
Drug interactions are reported among people who take Valtrex (valacyclovir hydrochloride) and Licorice (licorice). Common drug interactions include hepatic enzyme increased among females.
The phase IV clinical study analyzes what interactions people have when they take Valtrex and Licorice. It is created by eHealthMe based on reports of 12 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 Licorice?
Licorice has active ingredients of licorice. eHealthMe is studying from 420 Licorice users. Check the latest studies of Licorice.
12 people who take Valtrex and Licorice together, and have interactions are studied.

What are the common drug interactions of Valtrex and Licorice, by gender? *:
female:
- Hepatic enzyme increased
- Infusion site extravasation (flow of (blood or lymph) from infusion site)
- Jaundice (a yellowish pigmentation of the skin, the conjunctival membranes)
- Lethargy (tiredness)
- Lung infection
- Myalgia (muscle pain)
- Oropharyngeal pain
- Pain
- Pruritus (severe itching of the skin)
- Rib fracture
male:
n/a
What are the common drug interactions of Valtrex and Licorice, by age (0-1 to 60+)? *:
0-1:
n/a
2-9:
n/a
10-19:
n/a
20-29:
n/a
30-39:
n/a
40-49:
- Cholestasis (a condition where bile cannot flow from the liver to the duodenum)
- Hepatic enzyme increased
- Influenza
- Jaundice (a yellowish pigmentation of the skin, the conjunctival membranes)
- Pruritus (severe itching of the skin)
50-59:
n/a
60+:
n/a
What are the existing conditions these people have? *
- Hypogammaglobulinaemia (an abnormally low concentration of gamma globulin in the blood and increased risk of infection): 8 people, 66.67%
- Immunodeficiency Common Variable: 2 people, 16.67%
- Stress And Anxiety: 1 person, 8.33%
- Pain: 1 person, 8.33%
- Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 1 person, 8.33%
- Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 1 person, 8.33%
- Fibromyalgia (a long-term condition which causes pain all over the body): 1 person, 8.33%
* Approximation only. Some reports may have incomplete information.
Do you take Valtrex and Licorice?
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Related studies:
Effectiveness of, side effects of, and alternative drugs to the 2 drugs:
Browse all drug interactions of Valtrex and Licorice:
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 Licorice:
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 Licorice 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 licorice (the active ingredients of Valtrex and Licorice, respectively), and Valtrex and Licorice (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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