Ocrevus and Fever - a phase IV clinical study of FDA data

Summary:

Fever is reported as a side effect among people who take Ocrevus (ocrelizumab), especially for people who are female, 40-49 old, have been taking the drug for < 1 month also take Benadryl, and have Relapsing-remitting multiple sclerosis.

The phase IV clinical study analyzes which people have Fever when taking Ocrevus. It is created by eHealthMe based on reports of 56,539 people who have side effects when taking Ocrevus from the FDA, and is updated regularly.

What is Ocrevus?

Ocrevus has active ingredients of ocrelizumab. eHealthMe is studying from 56,582 Ocrevus users. Check the latest studies of Ocrevus.

What is Fever?

Fever is found to be associated with 3,491 drugs and 6,157 conditions by eHealthMe. Check the latest studies of Fever.

On Nov, 15, 2025

56,539 people reported to have side effects when taking Ocrevus.
Among them, 2,371 people (4.19%) have Fever.

Among these 2,371 people:

* Approximation only. Some reports may have incomplete information.

Do you take Ocrevus and have Fever?

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Related studies:

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

Ocrevus (56,582 reports)

Fever treatments and more:

Fever (498,662 reports)

How severe was Fever and when was it recovered:

Fever in Ocrevus

Expand to all the drugs that have ingredients of ocrelizumab:

Fever and drugs with ingredients of ocrelizumab (2,636 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+

Common Ocrevus side effects:

Browse all side effects of Ocrevus:

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

Common drugs associated with Fever:

Browse all the drugs that are associated with Fever:

Fever (3,491 drugs)

Common conditions associated with Fever:

Arthritis - rheumatoid: 27,612 reports
Multiple sclerosis aggravated: 20,065 reports
Hypertension: 16,478 reports
Htn: 16,380 reports
Crohns disease: 14,102 reports
Plasma cell myeloma: 12,143 reports
Pain exacerbated: 12,055 reports
Alternative medicine - pain relief: 11,762 reports
Asthma: 9,798 reports
Bronchial asthma: 9,742 reports

Browse all the conditions that are associated with Fever:

Fever (6,157 conditions)

Related publications that referenced our studies

Schiller D, Maieron A, Sch?fl R, Donnerer J, "Drug fever due to a single dose of pantoprazole", Pharmacology, 2015 Jan .
Schiller D, Maieron A, Sch?fl R, Donnerer J, "Drug fever due to a single dose of pantoprazole", Pharmacology, 2015 Jan .

How the study uses the data?

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