Anaprox and Muscle spasms - a phase IV clinical study of FDA data

Summary:

Muscle spasms is reported as a side effect among people who take Anaprox (naproxen sodium), especially for people who are female, 40-49 old, have been taking the drug for 1 - 6 months also take Lyrica, and have Narcolepsy.

The phase IV clinical study analyzes which people have Muscle spasms when taking Anaprox. It is created by eHealthMe based on reports of 1,302 people who have side effects when taking Anaprox from the FDA, and is updated regularly.

What is Anaprox?

Anaprox has active ingredients of naproxen sodium. eHealthMe is studying from 1,370 Anaprox users. Check the latest studies of Anaprox.

What is Muscle spasms?

Muscle spasms (muscle contraction) is found to be associated with 2,670 drugs and 3,100 conditions by eHealthMe. Check the latest studies of Muscle spasms.

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 Aug, 22, 2026

1,302 people reported to have side effects when taking Anaprox.
Among them, 54 people (4.15%) have Muscle spasms.

Among these 54 people:

How long have people been on Anaprox when they have Muscle spasms? *

What is the gender of people who have Muscle spasms when taking Anaprox? *

female: 77.36 %
male: 22.64 %

What is the age of people who have Muscle spasms when taking Anaprox? *

What are other drugs people take besides Anaprox? *

What are other side effects people have besides Muscle spasms? *

Nausea (feeling of having an urge to vomit): 22 people, 40.74%
Fatigue (feeling of tiredness): 21 people, 38.89%
Pain In Extremity: 20 people, 37.04%
Joint Pain: 18 people, 33.33%
Diarrhea: 15 people, 27.78%
Pain: 13 people, 24.07%
Abdominal Pain: 12 people, 22.22%
Cyst (a closed sac): 12 people, 22.22%
Rashes (redness): 12 people, 22.22%
Sinusitis (inflammation of sinus): 11 people, 20.37%

What are the existing conditions these people have? *

Cataplexy (loss of muscle tone accompanied by full conscious awareness): 9 people, 16.67%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 9 people, 16.67%
Pain: 7 people, 12.96%
Hepatitis C: 6 people, 11.11%
Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 5 people, 9.26%
Birth Control: 5 people, 9.26%
Abdominal Pain: 5 people, 9.26%
Insomnia (sleeplessness): 4 people, 7.41%
Nausea (feeling of having an urge to vomit): 3 people, 5.56%
Premenstrual Syndrome: 3 people, 5.56%

* Approximation only. Some reports may have incomplete information.

Do you take Anaprox and have Muscle spasms?

- Check whether Muscle spasms 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 Anaprox:

Anaprox (1,370 reports)

Muscle spasms treatments and more:

Muscle spasms (238,419 reports)

Browse all side effects of Anaprox:

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 Muscle spasms:

Muscle spasms (2,670 drugs)

Browse all the conditions that are associated with Muscle spasms:

Muscle spasms (3,100 conditions)

How the study uses the data?

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