Zyprexa and Belligerence - a phase IV clinical study of FDA data

Summary:

Belligerence is reported as a side effect among people who take Zyprexa (olanzapine), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Escitalopram, and have Crohn's disease.

The phase IV clinical study analyzes which people have Belligerence when taking Zyprexa. It is created by eHealthMe based on reports of 63,412 people who have side effects when taking Zyprexa from the FDA, and is updated regularly.

What is Zyprexa?

Zyprexa has active ingredients of olanzapine. It is often used in bipolar disorder. eHealthMe is studying from 64,724 Zyprexa users. Check the latest studies of Zyprexa.

What is Belligerence?

Belligerence (aggressive or warlike behaviour) is found to be associated with 102 drugs and 202 conditions by eHealthMe. Check the latest studies of Belligerence.

On Jul, 26, 2026

63,412 people reported to have side effects when taking Zyprexa.
Among them, 24 people (0.04%) have Belligerence.

Among these 24 people:

How long have people been on Zyprexa when they have Belligerence? *

What is the gender of people who have Belligerence when taking Zyprexa? *

female: 54.55 %
male: 45.45 %

What is the age of people who have Belligerence when taking Zyprexa? *

What are other drugs people take besides Zyprexa? *

What are other side effects people have besides Belligerence? *

Fall: 9 people, 37.50%
Nausea (feeling of having an urge to vomit): 8 people, 33.33%
Weight Decreased: 7 people, 29.17%
Dizziness: 7 people, 29.17%
Aggression: 7 people, 29.17%
Confusional State: 6 people, 25.00%
Weakness: 6 people, 25.00%
Fatigue (feeling of tiredness): 6 people, 25.00%
Feeling Abnormal: 6 people, 25.00%
Insomnia (sleeplessness): 6 people, 25.00%

What are the existing conditions these people have? *

Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 5 people, 20.83%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 5 people, 20.83%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 4 people, 16.67%
Fear: 2 people, 8.33%
Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 1 person, 4.17%
Schizoaffective Disorder (a mental disorder characterized by disordered thought): 1 person, 4.17%
Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures): 1 person, 4.17%
Dementia (madness): 1 person, 4.17%
Affective Disorder (mental disorder): 1 person, 4.17%

* Approximation only. Some reports may have incomplete information.

Do you take Zyprexa and have Belligerence?

- Check whether Belligerence 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 Zyprexa:

Zyprexa (64,724 reports)

Belligerence treatments and more:

Belligerence (626 reports)

Browse all side effects of Zyprexa:

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 Belligerence:

Belligerence (102 drugs)

Browse all the conditions that are associated with Belligerence:

Belligerence (202 conditions)

Related publications that referenced our studies

Gupta SK, Shwetank B, "Reversible bilateral sensori-neural hearing loss due to olanzapine in a male suffering from bipolar affective disorder", Indian journal of pharmacology, 2014 Jan .
Og?odek E, Szota A, Araszkiewicz A, "Olanzapine-induced neuroleptic malignant syndrome after 10 years of treatment", Aust NZJ Psychiatry, 2013 Oct .
Gupta SK, Shwetank B, "Reversible bilateral sensori-neural hearing loss due to olanzapine in a male suffering from bipolar affective disorder", Indian journal of pharmacology, 2014 Jan .
Og?odek E, Szota A, Araszkiewicz A, "Olanzapine-induced neuroleptic malignant syndrome after 10 years of treatment", Aust NZJ Psychiatry, 2013 Oct .

How the study uses the data?

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