Hizentra and Fibromyalgia - a phase IV clinical study of FDA data

Summary:

Fibromyalgia is reported as a side effect among people who take Hizentra (human immunoglobulin g), especially for people who are female, 60+ old, also take Clonazepam, and have Immunodeficiency common variable.

The phase IV clinical study analyzes which people have Fibromyalgia when taking Hizentra. It is created by eHealthMe based on reports of 23,644 people who have side effects when taking Hizentra from the FDA, and is updated regularly.

What is Hizentra?

Hizentra has active ingredients of human immunoglobulin g. eHealthMe is studying from 23,666 Hizentra users. Check the latest studies of Hizentra.

What is Fibromyalgia?

Fibromyalgia (a long-term condition which causes pain all over the body) is found to be associated with 1,336 drugs and 1,832 conditions by eHealthMe. Check the latest studies of Fibromyalgia.

On Jul, 14, 2026

23,644 people reported to have side effects when taking Hizentra.
Among them, 34 people (0.14%) have Fibromyalgia.

Among these 34 people:

What is the gender of people who have Fibromyalgia when taking Hizentra? *

female: 100 %
male: 0.0 %

What is the age of people who have Fibromyalgia when taking Hizentra? *

What are other drugs people take besides Hizentra? *

What are other side effects people have besides Fibromyalgia? *

Pain: 12 people, 35.29%
Fatigue (feeling of tiredness): 9 people, 26.47%
Nausea (feeling of having an urge to vomit): 8 people, 23.53%
Cough: 8 people, 23.53%
Fever: 8 people, 23.53%
Dyspnea (difficult or laboured breathing): 8 people, 23.53%
Stress And Anxiety: 7 people, 20.59%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 7 people, 20.59%
Malaise (a feeling of general discomfort or uneasiness): 6 people, 17.65%
Infusion Site Swelling: 6 people, 17.65%

What are the existing conditions these people have? *

Primary Immunodeficiency Syndrome: 10 people, 29.41%
Immunodeficiency Common Variable: 10 people, 29.41%
Hypogammaglobulinaemia (an abnormally low concentration of gamma globulin in the blood and increased risk of infection): 9 people, 26.47%
Secondary Immunodeficiency (lack of immunity due to some disease): 2 people, 5.88%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 5.88%
Drowsiness: 2 people, 5.88%
Chronic Inflammatory Demyelinating Polyradiculoneuropathy (long lasting infection of nerves outside brain and spinal cord): 2 people, 5.88%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 2 people, 5.88%
Immune System Disorder: 1 person, 2.94%
Hypergammaglobulinaemia (elevated levels of gamma globulin): 1 person, 2.94%

* Approximation only. Some reports may have incomplete information.

Do you take Hizentra and have Fibromyalgia?

- Check whether Fibromyalgia 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 Hizentra:

Hizentra (23,666 reports)

Fibromyalgia treatments and more:

Fibromyalgia (92,987 reports)

Browse all side effects of Hizentra:

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 Fibromyalgia:

Fibromyalgia (1,336 drugs)

Browse all the conditions that are associated with Fibromyalgia:

Fibromyalgia (1,832 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on human immunoglobulin g (the active ingredients of Hizentra) and Hizentra (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.