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

Summary:

Abnormal behavior is reported as a side effect among people who take Naprosyn (naproxen), especially for people who are male, 60+ old, have been taking the drug for 2 - 5 years also take Plavix, and have Narcolepsy.

The phase IV clinical study analyzes which people have Abnormal behavior when taking Naprosyn. It is created by eHealthMe based on reports of 16,337 people who have side effects when taking Naprosyn from the FDA, and is updated regularly.

What is Naprosyn?

Naprosyn has active ingredients of naproxen. It is often used in pain. eHealthMe is studying from 16,738 Naprosyn users. Check the latest studies of Naprosyn.

What is Abnormal behavior?

Abnormal behavior is found to be associated with 1,423 drugs and 1,885 conditions by eHealthMe. Check the latest studies of Abnormal behavior.

On Dec, 23, 2025

16,337 people reported to have side effects when taking Naprosyn.
Among them, 32 people (0.2%) have Abnormal behavior.

Among these 32 people:

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

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

female: 31.25 %
male: 68.75 %

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

What are other drugs people take besides Naprosyn? *

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

Fall: 10 people, 31.25%
Aggression: 9 people, 28.12%
Stress And Anxiety: 7 people, 21.88%
Confusional State: 6 people, 18.75%
Cardiac Failure Congestive: 6 people, 18.75%
Dyspnea (difficult or laboured breathing): 6 people, 18.75%
Head Injury: 6 people, 18.75%
Depression: 6 people, 18.75%
Hallucinations (sensations that appear real but are created by your mind): 6 people, 18.75%
Agitation (state of anxiety or nervous excitement): 6 people, 18.75%

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 4 people, 12.50%
Cardiac Failure Congestive: 3 people, 9.38%
Sleep Disorder: 3 people, 9.38%
Multiple Myeloma (cancer of the plasma cells): 2 people, 6.25%
Ill-Defined Disorder: 2 people, 6.25%
High Blood Pressure: 2 people, 6.25%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 6.25%
Pericarditis (inflammation of the pericardium): 2 people, 6.25%
Pleural Effusion (water on the lungs): 2 people, 6.25%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 2 people, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Naprosyn and have Abnormal behavior?

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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Naprosyn:

Naprosyn (16,738 reports)

Browse all side effects of Naprosyn:

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 (1,423 drugs)

Browse all the conditions that are associated with Abnormal behavior:

Abnormal behavior (1,885 conditions)

Drugs similar to Naprosyn and Abnormal behavior :

How the study uses the data?

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