Bactrim and Urine flow decreased - a phase IV clinical study of FDA data

Summary:

Urine flow decreased is reported as a side effect among people who take Bactrim (sulfamethoxazole; trimethoprim), especially for people who are male, 50-59 old, also take Cellcept, and have High blood pressure.

The phase IV clinical study analyzes which people have Urine flow decreased when taking Bactrim. It is created by eHealthMe based on reports of 86,509 people who have side effects when taking Bactrim from the FDA, and is updated regularly.

What is Bactrim?

Bactrim has active ingredients of sulfamethoxazole; trimethoprim. It is often used in urinary tract infection. eHealthMe is studying from 89,117 Bactrim users. Check the latest studies of Bactrim.

What is Urine flow decreased?

Urine flow decreased is found to be associated with 309 drugs and 514 conditions by eHealthMe. Check the latest studies of Urine flow decreased.

On Aug, 02, 2026

86,509 people reported to have side effects when taking Bactrim.
Among them, 16 people (0.02%) have Urine flow decreased.

Could Bactrim cause Urine flow decreased?

Among these 16 people:

What is the gender of people who have Urine flow decreased when taking Bactrim? *

female: 13.33 %
male: 86.67 %

What is the age of people who have Urine flow decreased when taking Bactrim? *

What are other drugs people take besides Bactrim? *

What are other side effects people have besides Urine flow decreased? *

Nausea (feeling of having an urge to vomit): 6 people, 37.50%
Urinary Retention (the inability to completely or partially empty the bladder): 5 people, 31.25%
Acute Kidney Failure: 5 people, 31.25%
High Blood Pressure: 4 people, 25.00%
Vision Blurred: 4 people, 25.00%
Memory Loss: 3 people, 18.75%
Heart Rate Increased: 3 people, 18.75%
Fatigue (feeling of tiredness): 3 people, 18.75%
Graft Versus Host Disease (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the body): 2 people, 12.50%
Hydrocele: 2 people, 12.50%

What are the existing conditions these people have? *

High Blood Pressure: 3 people, 18.75%
Prostatic Disorder: 2 people, 12.50%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 2 people, 12.50%
Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 2 people, 12.50%
Sinus Congestion (blockage of sinus): 1 person, 6.25%
Muscle Spasms (muscle contraction): 1 person, 6.25%
Cardiac Disorder: 1 person, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Bactrim and have Urine flow decreased?

- Check whether Urine flow decreased is associated with a drug or a condition
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Related studies:

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

Bactrim (89,117 reports)

Urine flow decreased treatments and more:

Urine flow decreased (3,410 reports)

How severe was Urine flow decreased and when was it recovered:

Urine flow decreased in Bactrim

Expand to all the drugs that have ingredients of sulfamethoxazole; trimethoprim:

Urine flow decreased and drugs with ingredients of sulfamethoxazole; trimethoprim (26 reports)

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Bactrim:

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 Urine flow decreased:

Urine flow decreased (309 drugs)

Browse all the conditions that are associated with Urine flow decreased:

Urine flow decreased (514 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on sulfamethoxazole; trimethoprim (the active ingredients of Bactrim) and Bactrim (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.