Tequin and Duodenal ulcer aggravated - a phase IV clinical study of FDA data

Summary:

Duodenal ulcer aggravated is reported as a side effect among people who take Tequin (gatifloxacin), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Ambien, and have Constipation.

The phase IV clinical study analyzes which people have Duodenal ulcer aggravated when taking Tequin. It is created by eHealthMe based on reports of 4,643 people who have side effects when taking Tequin from the FDA, and is updated regularly.

What is Tequin?

Tequin has active ingredients of gatifloxacin. eHealthMe is studying from 4,645 Tequin users. Check the latest studies of Tequin.

What is Duodenal ulcer aggravated?

Duodenal ulcer aggravated is found to be associated with 1,487 drugs and 524 conditions by eHealthMe. Check the latest studies of Duodenal ulcer aggravated.

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, 21, 2026

4,643 people reported to have side effects when taking Tequin.
Among them, 28 people (0.6%) have Duodenal ulcer aggravated.

Could Tequin cause Duodenal ulcer aggravated?

Among these 28 people:

How long have people been on Tequin when they have Duodenal ulcer aggravated? *

What is the gender of people who have Duodenal ulcer aggravated when taking Tequin? *

female: 46.15 %
male: 53.85 %

What is the age of people who have Duodenal ulcer aggravated when taking Tequin? *

What are other drugs people take besides Tequin? *

What are other side effects people have besides Duodenal ulcer aggravated? *

Pain: 22 people, 78.57%
Stress And Anxiety: 21 people, 75.00%
Nausea (feeling of having an urge to vomit): 20 people, 71.43%
Constipation: 18 people, 64.29%
Depression: 17 people, 60.71%
Osteomyelitis (infection of bone): 16 people, 57.14%
Headache (pain in head): 16 people, 57.14%
Head Injury: 16 people, 57.14%
Gallstones (stone formation by bile component): 16 people, 57.14%
Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body): 16 people, 57.14%

What are the existing conditions these people have? *

Constipation: 11 people, 39.29%
Osteoporosis (bones weak and more likely to break): 3 people, 10.71%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 3 people, 10.71%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 2 people, 7.14%
Depression: 2 people, 7.14%
Hypersensitivity: 2 people, 7.14%
Arthropathy: 1 person, 3.57%
Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 1 person, 3.57%
Bone Density Decreased: 1 person, 3.57%
Bone Loss: 1 person, 3.57%

* Approximation only. Some reports may have incomplete information.

Do you take Tequin and have Duodenal ulcer aggravated?

- Check whether Duodenal ulcer aggravated is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
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Related studies:

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

Tequin (4,645 reports)

Browse all side effects of Tequin:

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 Duodenal ulcer aggravated:

Duodenal ulcer aggravated (1,488 drugs)

Browse all the conditions that are associated with Duodenal ulcer aggravated:

Duodenal ulcer aggravated (524 conditions)

How the study uses the data?

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