Tysabri and Ileus paralytic - a phase IV clinical study of FDA data

Summary:

Ileus paralytic is reported as a side effect among people who take Tysabri (natalizumab), especially for people who are male, 40-49 old, have been taking the drug for 1 - 6 months also take Avonex, and have Fatigue.

The phase IV clinical study analyzes which people have Ileus paralytic when taking Tysabri. It is created by eHealthMe based on reports of 220,870 people who have side effects when taking Tysabri from the FDA, and is updated regularly.

What is Tysabri?

Tysabri has active ingredients of natalizumab. It is often used in multiple sclerosis. eHealthMe is studying from 221,369 Tysabri users. Check the latest studies of Tysabri.

What is Ileus paralytic?

Ileus paralytic (obstruction of the intestine due to paralysis of the intestinal muscles) is found to be associated with 686 drugs and 849 conditions by eHealthMe. Check the latest studies of Ileus paralytic.

On Jul, 16, 2026

220,870 people reported to have side effects when taking Tysabri.
Among them, 20 people (0.01%) have Ileus paralytic.

Among these 20 people:

How long have people been on Tysabri when they have Ileus paralytic? *

What is the gender of people who have Ileus paralytic when taking Tysabri? *

female: 35 %
male: 65 %

What is the age of people who have Ileus paralytic when taking Tysabri? *

What are other drugs people take besides Tysabri? *

What are other side effects people have besides Ileus paralytic? *

Memory Loss: 5 people, 25.00%
Septic Shock (shock due to blood infection): 5 people, 25.00%
Enterocolitis Haemorrhagic (bleeding and inflammation of the digestive tract, involving enteritis of the small intestine and colitis of the colon): 4 people, 20.00%
Progressive Multifocal Leukoencephalopathy (rapidly progressive neuromuscular disease caused by opportunistic infection of brain cells): 4 people, 20.00%
Confusion: 4 people, 20.00%
Urticaria (rash of round, red welts on the skin that itch intensely): 4 people, 20.00%
Pain: 3 people, 15.00%
Herpes Zoster: 2 people, 10.00%
Cholestasis (a condition where bile cannot flow from the liver to the duodenum): 2 people, 10.00%
Incision Site Pain: 2 people, 10.00%

What are the existing conditions these people have? *

Waldenstrom's Macroglobulinaemia (cancer affects small lymphocytes (white blood cells)): 1 person, 5.00%
Tachyarrhythmia (disturbance of the heart rhythm in which the heart rate is abnormally increased): 1 person, 5.00%
Rectal Cancer (cancer of rectum): 1 person, 5.00%
Pain: 1 person, 5.00%
Osteoporosis (bones weak and more likely to break): 1 person, 5.00%
Osteopenia (a condition where bone mineral density is lower than normal): 1 person, 5.00%
Myocardial Ischaemia (the blood flow through one or more of the blood vessels that lead to heart (coronary arteries) is decreased): 1 person, 5.00%
High Blood Pressure: 1 person, 5.00%
Febrile Neutropenia (fever with reduced white blood cells): 1 person, 5.00%
Fatigue (feeling of tiredness): 1 person, 5.00%

* Approximation only. Some reports may have incomplete information.

Do you take Tysabri and have Ileus paralytic?

- Check whether Ileus paralytic 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 Tysabri:

Tysabri (221,369 reports)

Ileus paralytic treatments and more:

Ileus paralytic (6,720 reports)

Browse all side effects of Tysabri:

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 Ileus paralytic:

Ileus paralytic (686 drugs)

Browse all the conditions that are associated with Ileus paralytic:

Ileus paralytic (849 conditions)

How the study uses the data?

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