Mucinex and Rashes - a phase IV clinical study of FDA data

Summary:

Rashes is reported as a side effect among people who take Mucinex (guaifenesin), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Zyrtec, and have Immunodeficiency common variable.

The phase IV clinical study analyzes which people have Rashes when taking Mucinex. It is created by eHealthMe based on reports of 28,090 people who have side effects when taking Mucinex from the FDA, and is updated regularly.

What is Mucinex?

Mucinex has active ingredients of guaifenesin. It is often used in cough. eHealthMe is studying from 29,749 Mucinex users. Check the latest studies of Mucinex.

What is Rashes?

Rashes (redness) is found to be associated with 3,713 drugs and 6,213 conditions by eHealthMe. Check the latest studies of Rashes.

On May, 10, 2026

28,090 people reported to have side effects when taking Mucinex.
Among them, 1,046 people (3.72%) have Rashes.

Among these 1,046 people:

* Approximation only. Some reports may have incomplete information.

Do you take Mucinex and have Rashes?

- Check whether Rashes 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 Mucinex:

Mucinex (29,749 reports)

Rashes treatments and more:

Rashes (702,909 reports)

How severe was Rashes and when was it recovered:

Rashes in Mucinex

Expand to all the drugs that have ingredients of guaifenesin:

Rashes and drugs with ingredients of guaifenesin (1,607 reports)

Sub-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 Mucinex:

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 Rashes:

Rashes (3,713 drugs)

Browse all the conditions that are associated with Rashes:

Rashes (6,213 conditions)

How the study uses the data?

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