Mucinex and Abnormal behavior - a phase IV clinical study of FDA data

Summary:

Abnormal behavior 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 Synthroid, and have Narcolepsy.

The phase IV clinical study analyzes which people have Abnormal behavior 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 Abnormal behavior?

Abnormal behavior is found to be associated with 1,366 drugs and 1,948 conditions by eHealthMe. Check the latest studies of Abnormal behavior.

On Jul, 13, 2026

28,090 people reported to have side effects when taking Mucinex.
Among them, 41 people (0.15%) have Abnormal behavior.

Among these 41 people:

How long have people been on Mucinex when they have Abnormal behavior? *

What is the gender of people who have Abnormal behavior when taking Mucinex? *

female: 64.86 %
male: 35.14 %

What is the age of people who have Abnormal behavior when taking Mucinex? *

What are other drugs people take besides Mucinex? *

What are other side effects people have besides Abnormal behavior? *

Memory Loss: 7 people, 17.07%
Fall: 7 people, 17.07%
Nausea And Vomiting: 6 people, 14.63%
Hallucinations (sensations that appear real but are created by your mind): 5 people, 12.20%
Feeling Abnormal: 5 people, 12.20%
Nausea (feeling of having an urge to vomit): 5 people, 12.20%
Confusional State: 5 people, 12.20%
Balance Disorder: 5 people, 12.20%
Stress And Anxiety: 5 people, 12.20%
Fatigue (feeling of tiredness): 5 people, 12.20%

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 12.20%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 4.88%
Respiratory Tract Congestion (blockage on respiratory system): 2 people, 4.88%
Insomnia (sleeplessness): 2 people, 4.88%
Nasopharyngitis (inflammation of the nasopharynx): 2 people, 4.88%
Asthma: 2 people, 4.88%
Drug Dependence: 2 people, 4.88%
Tardive Dyskinesia (a disorder that involves involuntary movements): 2 people, 4.88%
Anger: 1 person, 2.44%
Agitation (state of anxiety or nervous excitement): 1 person, 2.44%

* Approximation only. Some reports may have incomplete information.

Do you take Mucinex and have Abnormal behavior?

- Check whether Abnormal behavior 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)

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 Abnormal behavior:

Abnormal behavior (1,366 drugs)

Browse all the conditions that are associated with Abnormal behavior:

Abnormal behavior (1,948 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.