Listerine side effects, by duration, gender and age (a phase IV clinical study of FDA data)

Summary:

Side effects are reported by people who take Listerine (menthol, thymol, methyl salicylate, eucalyptol). Common side effects include application site burn among females and ageusia among males.

The phase IV clinical study is created by eHealthMe based on 1,150 reports from the FDA, and is updated regularly.

What is Listerine?

Listerine has active ingredients of menthol, thymol, methyl salicylate, eucalyptol. eHealthMe is studying from 1,164 Listerine users. Check the latest studies of Listerine.

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 Sep, 01, 2026

1,150 people who take Listerine and have side effects are studied.

Listerine side effects.

What are the common side effects of Listerine, by gender? *

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What are the common side effects of Listerine, by age (0-1 to 60+)? *

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What are the common side effects of Listerine, by the time people have been on the drug (< 1 month to 10+ years)? *

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* Approximation only. Some reports may have incomplete information.

Do you take Listerine?

- Personalize this study to your gender and age
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

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.



How the study uses the data?

The study is based on menthol, thymol, methyl salicylate, eucalyptol (the active ingredients of Listerine) and Listerine (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered.

Related studies are listed below in case you need more information:

Alternative drugs to, pros and cons of Listerine:

All Listerine side effects 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 z

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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