Flagyl and Gallbladder enlargement - a phase IV clinical study of FDA data

Summary:

Gallbladder enlargement is reported as a side effect among people who take Flagyl (metronidazole), especially for people who are female, 60+ old, also take Ativan, and have Bone density decreased.

The phase IV clinical study analyzes which people have Gallbladder enlargement when taking Flagyl. It is created by eHealthMe based on reports of 24,739 people who have side effects when taking Flagyl from the FDA, and is updated regularly.

What is Flagyl?

Flagyl has active ingredients of metronidazole. It is often used in vaginitis bacterial. eHealthMe is studying from 25,897 Flagyl users. Check the latest studies of Flagyl.

What is Gallbladder enlargement?

Gallbladder enlargement is found to be associated with 271 drugs and 645 conditions by eHealthMe. Check the latest studies of Gallbladder enlargement.

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 Sep, 04, 2026

24,739 people reported to have side effects when taking Flagyl.
Among them, 19 people (0.08%) have Gallbladder enlargement.

Could Flagyl cause Gallbladder enlargement?

Among these 19 people:

What is the gender of people who have Gallbladder enlargement when taking Flagyl? *

female: 84.21 %
male: 15.79 %

What is the age of people who have Gallbladder enlargement when taking Flagyl? *

What are other drugs people take besides Flagyl? *

What are other side effects people have besides Gallbladder enlargement? *

Injury: 16 people, 84.21%
Cellulitis (infection under the skin): 16 people, 84.21%
Osteomyelitis (infection of bone): 16 people, 84.21%
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets): 16 people, 84.21%
Neuropathy Peripheral (surface nerve damage): 16 people, 84.21%
Impaired Healing: 16 people, 84.21%
Fall: 16 people, 84.21%
Stress And Anxiety: 16 people, 84.21%
Pain: 16 people, 84.21%
Anaemia (lack of blood): 16 people, 84.21%

What are the existing conditions these people have? *

Bone Density Decreased: 8 people, 42.11%
Metastases To Bone (cancer spreads to bone): 4 people, 21.05%
Breast Cancer Metastatic: 4 people, 21.05%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 2 people, 10.53%
Trigeminal Neuralgia (a painful condition of the nerve responsible for most facial sensation): 1 person, 5.26%
Plantar Fasciitis (painful inflammatory process of the plantar fascia): 1 person, 5.26%
High Blood Pressure: 1 person, 5.26%
High Blood Cholesterol: 1 person, 5.26%
Bone Loss: 1 person, 5.26%

* Approximation only. Some reports may have incomplete information.

Do you take Flagyl and have Gallbladder enlargement?

- Check whether Gallbladder enlargement 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 Flagyl:

Flagyl (25,897 reports)

Browse all side effects of Flagyl:

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 Gallbladder enlargement:

Gallbladder enlargement (271 drugs)

Browse all the conditions that are associated with Gallbladder enlargement:

Gallbladder enlargement (645 conditions)

How the study uses the data?

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