Mefenamic acid and Sinus tachycardia - a phase IV clinical study of FDA data

Summary:

Sinus tachycardia is reported as a side effect among people who take Mefenamic acid (mefenamic acid), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Xyrem, and have Narcolepsy.

The phase IV clinical study analyzes which people have Sinus tachycardia when taking Mefenamic acid. It is created by eHealthMe based on reports of 4,738 people who have side effects when taking Mefenamic acid from the FDA, and is updated regularly.

What is Mefenamic acid?

Mefenamic acid has active ingredients of mefenamic acid. It is often used in painful menstrual periods. eHealthMe is studying from 4,844 Mefenamic acid users. Check the latest studies of Mefenamic acid.

What is Sinus tachycardia?

Sinus tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node) is found to be associated with 1,268 drugs and 1,412 conditions by eHealthMe. Check the latest studies of Sinus tachycardia.

On Aug, 10, 2026

4,738 people reported to have side effects when taking Mefenamic acid.
Among them, 16 people (0.34%) have Sinus tachycardia.

Could Mefenamic acid cause Sinus tachycardia?

Among these 16 people:

How long have people been on Mefenamic acid when they have Sinus tachycardia? *

What is the gender of people who have Sinus tachycardia when taking Mefenamic acid? *

female: 66.67 %
male: 33.33 %

What is the age of people who have Sinus tachycardia when taking Mefenamic acid? *

What are other drugs people take besides Mefenamic acid? *

Xyrem: 5 people, 31.25%
Dexedrine: 4 people, 25.00%
Aygestin: 4 people, 25.00%
Lisdexamfetamine Dimesylate: 3 people, 18.75%
Ibuprofen: 3 people, 18.75%
Lorazepam: 3 people, 18.75%
Escitalopram: 3 people, 18.75%
Modafinil: 3 people, 18.75%
Norethindrone: 3 people, 18.75%
Lamotrigine: 3 people, 18.75%

What are other side effects people have besides Sinus tachycardia? *

Stress And Anxiety: 7 people, 43.75%
High Blood Pressure: 5 people, 31.25%
Blood Sodium Decreased: 4 people, 25.00%
Chest Pain: 4 people, 25.00%
Peripheral Nerve Injury: 4 people, 25.00%
Hypotension (abnormally low blood pressure): 3 people, 18.75%
Mydriasis (a dilation of the pupil): 3 people, 18.75%
Altered State Of Consciousness (altered state of mind): 3 people, 18.75%
Dyspnea (difficult or laboured breathing): 3 people, 18.75%
Fever: 3 people, 18.75%

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 5 people, 31.25%
Pain: 3 people, 18.75%
Heavy Or Prolong Menstrual Bleeding: 3 people, 18.75%
Haemorrhage (bleeding): 3 people, 18.75%
Metastatic Malignant Melanoma (spreadable cancer tumour of melanine): 2 people, 12.50%
Weight Loss: 1 person, 6.25%
Muscle Spasms (muscle contraction): 1 person, 6.25%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 1 person, 6.25%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 1 person, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Mefenamic acid and have Sinus tachycardia?

- Check whether Sinus tachycardia 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 Mefenamic acid:

Mefenamic acid (4,844 reports)

Browse all side effects of Mefenamic acid:

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 Sinus tachycardia:

Sinus tachycardia (1,268 drugs)

Browse all the conditions that are associated with Sinus tachycardia:

Sinus tachycardia (1,412 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on mefenamic acid (the active ingredients of Mefenamic acid) and Mefenamic acid (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.