Flomax and Secondary progressive multiple sclerosis - a phase IV clinical study of FDA data

Summary:

Secondary progressive multiple sclerosis is reported as a side effect among people who take Flomax (tamsulosin hydrochloride), especially for people who are male, 60+ old, also take Tysabri, and have Multiple sclerosis.

The phase IV clinical study analyzes which people have Secondary progressive multiple sclerosis when taking Flomax. It is created by eHealthMe based on reports of 50,469 people who have side effects when taking Flomax from the FDA, and is updated regularly.

What is Flomax?

Flomax has active ingredients of tamsulosin hydrochloride. It is often used in enlarged prostate. eHealthMe is studying from 52,865 Flomax users. Check the latest studies of Flomax.

What is Secondary progressive multiple sclerosis?

Secondary progressive multiple sclerosis (a stage of ms which comes after relapsing remitting ms in many cases) is found to be associated with 138 drugs and 134 conditions by eHealthMe. Check the latest studies of Secondary progressive multiple sclerosis.

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, 27, 2026

50,469 people reported to have side effects when taking Flomax.
Among them, 13 people (0.03%) have Secondary progressive multiple sclerosis.

Could Flomax cause Secondary progressive multiple sclerosis?

Among these 13 people:

What is the gender of people who have Secondary progressive multiple sclerosis when taking Flomax? *

female: 30.77 %
male: 69.23 %

What is the age of people who have Secondary progressive multiple sclerosis when taking Flomax? *

What are other drugs people take besides Flomax? *

What are other side effects people have besides Secondary progressive multiple sclerosis? *

Multiple Sclerosis Relapse (reoccurrence of a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 9 people, 69.23%
Drug Ineffective: 5 people, 38.46%
Weakness: 5 people, 38.46%
Muscle Spasticity (tight or stiff muscles and an inability to control those muscles): 4 people, 30.77%
Fall: 4 people, 30.77%
Visual Impairment: 4 people, 30.77%
Demyelination (loss of the myelin covering of some nerve fibres resulting in their impaired function): 4 people, 30.77%
Decreased Vibratory Sense: 3 people, 23.08%
Stress And Anxiety: 3 people, 23.08%
Myelomalacia (softening and damage of the spinal cord due to some injury like compression by disc extrusion): 3 people, 23.08%

What are the existing conditions these people have? *

Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 13 people, 100.00%
Urinary Tract Disorder: 2 people, 15.38%
Micturition Urgency (urgency to pass the urine): 2 people, 15.38%
High Blood Cholesterol: 2 people, 15.38%
Urinary Incontinence (inability to control the flow of urine and involuntary urination): 1 person, 7.69%
Relapsing-Remitting Multiple Sclerosis (reoccurrence of an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged): 1 person, 7.69%
Insomnia (sleeplessness): 1 person, 7.69%
Gait Disturbance: 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Flomax and have Secondary progressive multiple sclerosis?

- Check whether Secondary progressive multiple sclerosis 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 Flomax:

Flomax (52,865 reports)

Secondary progressive multiple sclerosis treatments and more:

Secondary progressive multiple sclerosis (11,840 reports)

How severe was Secondary progressive multiple sclerosis and when was it recovered:

Secondary progressive multiple sclerosis in Flomax

Expand to all the drugs that have ingredients of tamsulosin hydrochloride:

Secondary progressive multiple sclerosis and drugs with ingredients of tamsulosin hydrochloride

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 Flomax:

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 Secondary progressive multiple sclerosis:

Secondary progressive multiple sclerosis (138 drugs)

Browse all the conditions that are associated with Secondary progressive multiple sclerosis:

Secondary progressive multiple sclerosis (134 conditions)

How the study uses the data?

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