Naprosyn and Influenza like illness - a phase IV clinical study of FDA data

Summary:

Influenza like illness is reported as a side effect among people who take Naprosyn (naproxen), especially for people who are female, 40-49 old, have been taking the drug for 2 - 5 years also take Avonex, and have Multiple sclerosis.

The phase IV clinical study analyzes which people have Influenza like illness 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 Influenza like illness?

Influenza like illness is found to be associated with 1,893 drugs and 1,870 conditions by eHealthMe. Check the latest studies of Influenza like illness.

On Jul, 16, 2026

16,337 people reported to have side effects when taking Naprosyn.
Among them, 108 people (0.66%) have Influenza like illness.

Could Naprosyn cause Influenza like illness?

Among these 108 people:

How long have people been on Naprosyn when they have Influenza like illness? *

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What is the gender of people who have Influenza like illness when taking Naprosyn? *

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What is the age of people who have Influenza like illness when taking Naprosyn? *

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* Approximation only. Some reports may have incomplete information.

Do you take Naprosyn and have Influenza like illness?

- Check whether Influenza like illness 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 Naprosyn:

Naprosyn (16,738 reports)

Influenza like illness treatments and more:

Influenza like illness (105,520 reports)

How severe was Influenza like illness and when was it recovered:

Influenza like illness in Naprosyn

Expand to all the drugs that have ingredients of naproxen:

Influenza like illness and drugs with ingredients of naproxen (732 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 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 Influenza like illness:

Influenza like illness (1,893 drugs)

Browse all the conditions that are associated with Influenza like illness:

Influenza like illness (1,870 conditions)

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.