Fluoxetine and Bowel movement irregularity - a phase IV clinical study of FDA data

Summary:

Bowel movement irregularity is reported as a side effect among people who take Fluoxetine (fluoxetine hydrochloride), especially for people who are female, 60+ old, have been taking the drug for 1 - 6 months also take Inflectra, and have Fever.

The phase IV clinical study analyzes which people have Bowel movement irregularity when taking Fluoxetine. It is created by eHealthMe based on reports of 94,370 people who have side effects when taking Fluoxetine from the FDA, and is updated regularly.

What is Fluoxetine?

Fluoxetine has active ingredients of fluoxetine hydrochloride. It is often used in depression. eHealthMe is studying from 98,821 Fluoxetine users. Check the latest studies of Fluoxetine.

What is Bowel movement irregularity?

Bowel movement irregularity is found to be associated with 693 drugs and 626 conditions by eHealthMe. Check the latest studies of Bowel movement irregularity.

On Jun, 17, 2026

94,370 people reported to have side effects when taking Fluoxetine.
Among them, 42 people (0.04%) have Bowel movement irregularity.

Could Fluoxetine cause Bowel movement irregularity?

Among these 42 people:

How long have people been on Fluoxetine when they have Bowel movement irregularity? *

What is the gender of people who have Bowel movement irregularity when taking Fluoxetine? *

female: 57.14 %
male: 42.86 %

What is the age of people who have Bowel movement irregularity when taking Fluoxetine? *

What are other drugs people take besides Fluoxetine? *

What are other side effects people have besides Bowel movement irregularity? *

Insomnia (sleeplessness): 22 people, 52.38%
Nausea (feeling of having an urge to vomit): 20 people, 47.62%
Diarrhea: 19 people, 45.24%
Pain: 18 people, 42.86%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 17 people, 40.48%
Abdominal Distension: 16 people, 38.10%
Weight Decreased: 16 people, 38.10%
Suicidal Ideation: 14 people, 33.33%
Nausea And Vomiting: 13 people, 30.95%
Fatigue (feeling of tiredness): 13 people, 30.95%

What are the existing conditions these people have? *

Abdominal Pain Upper: 11 people, 26.19%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 11 people, 26.19%
Fever: 11 people, 26.19%
Pain: 10 people, 23.81%
Constipation: 6 people, 14.29%
Insomnia (sleeplessness): 5 people, 11.90%
High Blood Cholesterol: 5 people, 11.90%
Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 4 people, 9.52%
High Blood Pressure: 4 people, 9.52%
Autonomic Neuropathy (malfunction of the autonomic nervous system (ans)): 3 people, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Fluoxetine and have Bowel movement irregularity?

- Check whether Bowel movement irregularity 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 Fluoxetine:

Fluoxetine (98,821 reports)

Browse all side effects of Fluoxetine:

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 Bowel movement irregularity:

Bowel movement irregularity (693 drugs)

Browse all the conditions that are associated with Bowel movement irregularity:

Bowel movement irregularity (626 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on fluoxetine hydrochloride (the active ingredients of Fluoxetine) and Fluoxetine (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.