Rebif and Bell's palsy - a phase IV clinical study of FDA data

Summary:

Bell's palsy is reported as a side effect among people who take Rebif (interferon beta-1a), especially for people who are female, 40-49 old, have been taking the drug for 1 - 6 months also take Baclofen, and have Secondary progressive multiple sclerosis.

The phase IV clinical study analyzes which people have Bell's palsy when taking Rebif. It is created by eHealthMe based on reports of 60,837 people who have side effects when taking Rebif from the FDA, and is updated regularly.

What is Rebif?

Rebif has active ingredients of interferon beta-1a. It is often used in multiple sclerosis. eHealthMe is studying from 61,126 Rebif users. Check the latest studies of Rebif.

What is Bell's palsy?

Bell's palsy (facial paralysis) is found to be associated with 562 drugs and 1,263 conditions by eHealthMe. Check the latest studies of Bell's palsy.

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, 29, 2026

60,837 people reported to have side effects when taking Rebif.
Among them, 48 people (0.08%) have Bell's palsy.

Among these 48 people:

How long have people been on Rebif when they have Bell's palsy? *

What is the gender of people who have Bell's palsy when taking Rebif? *

female: 85.42 %
male: 14.58 %

What is the age of people who have Bell's palsy when taking Rebif? *

What are other drugs people take besides Rebif? *

What are other side effects people have besides Bell's palsy? *

Hypoaesthesia (reduced sense of touch or sensation): 10 people, 20.83%
Dizziness: 8 people, 16.67%
Injection Site Pain: 6 people, 12.50%
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 5 people, 10.42%
Memory Loss: 5 people, 10.42%
Headache (pain in head): 5 people, 10.42%
Diarrhea: 4 people, 8.33%
Injection Site Haematoma (localized swelling filled with blood at injection site): 4 people, 8.33%
Gallstones (stone formation by bile component): 4 people, 8.33%
Nausea And Vomiting: 4 people, 8.33%

What are the existing conditions these people have? *

Secondary Progressive Multiple Sclerosis (a stage of ms which comes after relapsing remitting ms in many cases): 1 person, 2.08%

* Approximation only. Some reports may have incomplete information.

Do you take Rebif and have Bell's palsy?

- Check whether Bell's palsy 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 Rebif:

Rebif (61,126 reports)

Bell's palsy treatments and more:

Bell's palsy (7,037 reports)

Browse all side effects of Rebif:

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 Bell's palsy:

Bell's palsy (562 drugs)

Browse all the conditions that are associated with Bell's palsy:

Bell's palsy (1,263 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on interferon beta-1a (the active ingredients of Rebif) and Rebif (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.