Hydroxyzine and Febrile bone marrow aplasia - a phase IV clinical study of FDA data

Summary:

Febrile bone marrow aplasia is reported as a side effect among people who take Hydroxyzine (hydroxyzine hydrochloride), especially for people who are male, 60+ old, have been taking the drug for < 1 month also take Ondansetron, and have Acute lymphocytic leukemia (all).

The phase IV clinical study analyzes which people have Febrile bone marrow aplasia when taking Hydroxyzine. It is created by eHealthMe based on reports of 51,890 people who have side effects when taking Hydroxyzine from the FDA, and is updated regularly.

What is Hydroxyzine?

Hydroxyzine has active ingredients of hydroxyzine hydrochloride. It is often used in stress and anxiety. eHealthMe is studying from 54,070 Hydroxyzine users. Check the latest studies of Hydroxyzine.

What is Febrile bone marrow aplasia?

Febrile bone marrow aplasia (bone marrow greatly decreases or stops production of blood cells) is found to be associated with 294 drugs and 466 conditions by eHealthMe. Check the latest studies of Febrile bone marrow aplasia.

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, 26, 2026

51,890 people reported to have side effects when taking Hydroxyzine.
Among them, 50 people (0.1%) have Febrile bone marrow aplasia.

Could Hydroxyzine cause Febrile bone marrow aplasia?

Among these 50 people:

How long have people been on Hydroxyzine when they have Febrile bone marrow aplasia? *

What is the gender of people who have Febrile bone marrow aplasia when taking Hydroxyzine? *

female: 44.74 %
male: 55.26 %

What is the age of people who have Febrile bone marrow aplasia when taking Hydroxyzine? *

What are other drugs people take besides Hydroxyzine? *

Ondansetron: 35 people, 70.00%
Paracetamol: 26 people, 52.00%
Sulfamethoxazole: 13 people, 26.00%
Bactrim: 11 people, 22.00%
Mycamine: 9 people, 18.00%
Valacyclovir: 9 people, 18.00%
Potassium: 8 people, 16.00%
Vancomycin: 8 people, 16.00%
Piperacillin And Tazobactam: 7 people, 14.00%
Sulfamethoxazole And Trimethoprim: 7 people, 14.00%

What are other side effects people have besides Febrile bone marrow aplasia? *

Sepsis (a severe blood infection that can lead to organ failure and death): 11 people, 22.00%
Aplastic Anemia: 8 people, 16.00%
Mucosal Inflammation (infection of mucous membrane): 5 people, 10.00%
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 3 people, 6.00%
Nausea And Vomiting: 3 people, 6.00%
Graft Versus Host Disease In Skin (the donated bone marrow or stem cells view the recipient's body as foreign, and the donated cells/bone marrow attack the skin): 3 people, 6.00%
High Blood Pressure: 3 people, 6.00%
Venoocclusive Disease (small veins in the liver are obstructed): 3 people, 6.00%
Diarrhea: 3 people, 6.00%
Neuralgia (pain in one or more nerves): 3 people, 6.00%

What are the existing conditions these people have? *

Acute Lymphocytic Leukemia (All) (cancer of the white blood cells characterized by excess lymphoblasts): 21 people, 42.00%
Constipation: 18 people, 36.00%
Nausea (feeling of having an urge to vomit): 16 people, 32.00%
Birth Control: 13 people, 26.00%
Oral Herpes (viral infection of mouth): 13 people, 26.00%
Hypogammaglobulinaemia (an abnormally low concentration of gamma globulin in the blood and increased risk of infection): 13 people, 26.00%
Nausea And Vomiting: 11 people, 22.00%
Burkitt's Lymphoma (cancer of the lymphatic system): 8 people, 16.00%
Pain: 7 people, 14.00%
Myelodysplastic Syndrome (a group of conditions that occur when the blood-forming cells in the bone marrow are damaged): 6 people, 12.00%

* Approximation only. Some reports may have incomplete information.

Do you take Hydroxyzine and have Febrile bone marrow aplasia?

- Check whether Febrile bone marrow aplasia 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 Hydroxyzine:

Hydroxyzine (54,070 reports)

Browse all side effects of Hydroxyzine:

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 Febrile bone marrow aplasia:

Febrile bone marrow aplasia (294 drugs)

Browse all the conditions that are associated with Febrile bone marrow aplasia:

Febrile bone marrow aplasia (466 conditions)

Related publications that referenced our studies

Ate? ?, Arikan MF, Kaplan M, Altay M, "Hydroxyzine induced pancytopenia and petechial rashes: a rare complication", Journal Of Contemporary Medicine, 2017 Jan .
Ate? ?, Arikan MF, Kaplan M, Altay M, "Hydroxyzine induced pancytopenia and petechial rashes: a rare complication", Journal Of Contemporary Medicine, 2017 Jan .

How the study uses the data?

The study uses data from the FDA. It is based on hydroxyzine hydrochloride (the active ingredients of Hydroxyzine) and Hydroxyzine (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.

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