Ciprofloxacin and Abnormal faeces - a phase IV clinical study of FDA data

Summary:

Abnormal faeces is reported as a side effect among people who take Ciprofloxacin (ciprofloxacin), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Metronidazole, and have Pseudomonas infection.

The phase IV clinical study analyzes which people have Abnormal faeces when taking Ciprofloxacin. It is created by eHealthMe based on reports of 21,064 people who have side effects when taking Ciprofloxacin from the FDA, and is updated regularly.

What is Ciprofloxacin?

Ciprofloxacin has active ingredients of ciprofloxacin. It is often used in urinary tract infection. eHealthMe is studying from 22,256 Ciprofloxacin users. Check the latest studies of Ciprofloxacin.

What is Abnormal faeces?

Abnormal faeces (abnormal stool) is found to be associated with 749 drugs and 905 conditions by eHealthMe. Check the latest studies of Abnormal faeces.

On Aug, 02, 2026

21,064 people reported to have side effects when taking Ciprofloxacin.
Among them, 38 people (0.18%) have Abnormal faeces.

Could Ciprofloxacin cause Abnormal faeces?

Among these 38 people:

How long have people been on Ciprofloxacin when they have Abnormal faeces? *

What is the gender of people who have Abnormal faeces when taking Ciprofloxacin? *

female: 58.62 %
male: 41.38 %

What is the age of people who have Abnormal faeces when taking Ciprofloxacin? *

What are other drugs people take besides Ciprofloxacin? *

What are other side effects people have besides Abnormal faeces? *

Diarrhea: 27 people, 71.05%
Fever: 20 people, 52.63%
Haematochezia (passage of stools containing blood): 13 people, 34.21%
Abdominal Pain: 11 people, 28.95%
Drug Hypersensitivity: 11 people, 28.95%
Drug Intolerance (drug sensitivity): 11 people, 28.95%
Rashes (redness): 11 people, 28.95%
Faeces Discolored: 9 people, 23.68%
C-Reactive Protein Increased: 9 people, 23.68%
Constipation: 9 people, 23.68%

What are the existing conditions these people have? *

Pseudomonas Infection (pseudomonas infection is caused by a bacterium, pseudomonas aeruginosa): 13 people, 34.21%
Staphylococcal Infection (an infection with staphylococcus bacteria): 8 people, 21.05%
Respiratory Acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease): 8 people, 21.05%
Lower Respiratory Tract Infection: 8 people, 21.05%
Pneumonia Aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree): 8 people, 21.05%
Colitis (inflammation of colon): 6 people, 15.79%
Short-Bowel Syndrome (a condition in which the body cannot absorb enough fluids and nutrients because part of the small intestine is missing): 6 people, 15.79%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 6 people, 15.79%
Thrombocytopenia (decrease of platelets in blood): 3 people, 7.89%
Proctitis (inflammation of the rectum and anus): 3 people, 7.89%

* Approximation only. Some reports may have incomplete information.

Do you take Ciprofloxacin and have Abnormal faeces?

- Check whether Abnormal faeces 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 Ciprofloxacin:

Ciprofloxacin (22,256 reports)

Abnormal faeces treatments and more:

Abnormal faeces (11,634 reports)

Browse all side effects of Ciprofloxacin:

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 Abnormal faeces:

Abnormal faeces (749 drugs)

Browse all the conditions that are associated with Abnormal faeces:

Abnormal faeces (905 conditions)

Related publications that referenced our studies

Bolognesi M, Bolognesi D, "Medicine Ciprofloxacin-induced paroxysmal atrial fibrillation", , 2014 Mar .
Bolognesi M, Bolognesi D, "Ciprofloxacin-induced paroxysmal atrial fibrilation", OA Case Reports, 2012 Jan .
Bolognesi M, Bolognesi D, "Medicine Ciprofloxacin-induced paroxysmal atrial fibrillation", , 2014 Mar .
Bolognesi M, Bolognesi D, "Ciprofloxacin-induced paroxysmal atrial fibrilation", OA Case Reports, 2012 Jan .

How the study uses the data?

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