Bextra and Formication - a phase IV clinical study of FDA data

Summary:

Formication is reported as a side effect among people who take Bextra (valdecoxib), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Folic Acid, and have Ill-defined disorder.

The phase IV clinical study analyzes which people have Formication when taking Bextra. It is created by eHealthMe based on reports of 20,982 people who have side effects when taking Bextra from the FDA, and is updated regularly.

What is Bextra?

Bextra has active ingredients of valdecoxib. It is often used in pain. eHealthMe is studying from 20,994 Bextra users. Check the latest studies of Bextra.

What is Formication?

Formication (a sensation that exactly resembles that of small insects crawling on (or under) the skin) is found to be associated with 569 drugs and 915 conditions by eHealthMe. Check the latest studies of Formication.

On Aug, 03, 2025

20,982 people reported to have side effects when taking Bextra.
Among them, 17 people (0.08%) have Formication.

Among these 17 people:

How long have people been on Bextra when they have Formication? *

What is the gender of people who have Formication when taking Bextra? *

female: 87.5 %
male: 12.5 %

What is the age of people who have Formication when taking Bextra? *

What are other drugs people take besides Bextra? *

Lisinopril: 3 people, 17.65%
Folic Acid: 3 people, 17.65%
Methotrexate: 2 people, 11.76%
Celebrex: 2 people, 11.76%
Ranitidine: 2 people, 11.76%
Estropipate: 2 people, 11.76%
Hydrochlorothiazide: 2 people, 11.76%
Nicotine: 2 people, 11.76%
Hydrocortisone: 2 people, 11.76%
Bupropion Hydrochloride: 1 person, 5.88%

What are other side effects people have besides Formication? *

Nausea (feeling of having an urge to vomit): 4 people, 23.53%
Dyspnea (difficult or laboured breathing): 4 people, 23.53%
Itching: 4 people, 23.53%
Erythema Multiforme (a type of hypersensitivity reaction): 3 people, 17.65%
Drug Ineffective: 3 people, 17.65%
Hypersensitivity: 3 people, 17.65%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 3 people, 17.65%
Hypoaesthesia (reduced sense of touch or sensation): 2 people, 11.76%
Kidney Infection: 2 people, 11.76%
Dizziness: 2 people, 11.76%

What are the existing conditions these people have? *

Tendonitis (a condition that causes pain and swelling of tendons): 3 people, 17.65%
Ill-Defined Disorder: 3 people, 17.65%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 11.76%
Muscle Aches (muscle pain): 2 people, 11.76%
Infection: 2 people, 11.76%
Arthropathy: 2 people, 11.76%
Osteoarthritis (a joint disease caused by cartilage loss in a joint): 1 person, 5.88%
Back Pain: 1 person, 5.88%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 1 person, 5.88%

* Approximation only. Some reports may have incomplete information.

Do you take Bextra and have Formication?

- Check whether Formication 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 Bextra:

Bextra (20,994 reports)

Formication treatments and more:

Formication (8,246 reports)

How severe was Formication and when was it recovered:

Formication in Bextra

Browse all side effects of Bextra:

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 Formication:

Formication (569 drugs)

Browse all the conditions that are associated with Formication:

Formication (915 conditions)

How the study uses the data?

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