Hydroxyzine and Hypoxic-ischaemic encephalopathy - a phase IV clinical study of FDA data

Summary:

Hypoxic-ischaemic encephalopathy 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 Paroxetine, and have Hyperparathyroidism.

The phase IV clinical study analyzes which people have Hypoxic-ischaemic encephalopathy 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 54,069 Hydroxyzine users. Check the latest studies of Hydroxyzine.

What is Hypoxic-ischaemic encephalopathy?

Hypoxic-ischaemic encephalopathy (a condition that occurs when the entire brain is deprived of an adequate oxygen supply, but the deprivation isn't total) is found to be associated with 373 drugs and 597 conditions by eHealthMe. Check the latest studies of Hypoxic-ischaemic encephalopathy.

On Jul, 08, 2026

51,890 people reported to have side effects when taking Hydroxyzine.
Among them, 27 people (0.05%) have Hypoxic-ischaemic encephalopathy.

Could Hydroxyzine cause Hypoxic-ischaemic encephalopathy?

Among these 27 people:

How long have people been on Hydroxyzine when they have Hypoxic-ischaemic encephalopathy? *

What is the gender of people who have Hypoxic-ischaemic encephalopathy when taking Hydroxyzine? *

female: 43.48 %
male: 56.52 %

What is the age of people who have Hypoxic-ischaemic encephalopathy when taking Hydroxyzine? *

What are other drugs people take besides Hydroxyzine? *

What are other side effects people have besides Hypoxic-ischaemic encephalopathy? *

Locked-In Syndrome (a condition in which a patient is aware and awake but cannot move or communicate verbally due to complete paralysis): 8 people, 29.63%
Respiratory Acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease): 7 people, 25.93%
Septic Shock (shock due to blood infection): 7 people, 25.93%
Pain: 7 people, 25.93%
Acute Kidney Failure: 7 people, 25.93%
Central Nervous System Lesion (an abnormality in tissue of brain or spinal cord): 6 people, 22.22%
Overdose: 5 people, 18.52%
Hypotension (abnormally low blood pressure): 5 people, 18.52%
Head Injury: 5 people, 18.52%
Cardio-Respiratory Arrest (sudden dysfunction of heart and lungs): 5 people, 18.52%

What are the existing conditions these people have? *

Indigestion: 2 people, 7.41%
Hypersensitivity: 2 people, 7.41%
Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 2 people, 7.41%
Polymyositis (inflammatory muscle disease that causes weakness of the skeletal muscles): 2 people, 7.41%
Pain: 2 people, 7.41%
Diarrhea: 2 people, 7.41%
Multiple Allergies (allergy to multiple agents): 2 people, 7.41%
Infection: 2 people, 7.41%
High Blood Pressure: 2 people, 7.41%
Hyperparathyroidism (an abnormally high concentration of parathyroid hormone in the blood, resulting in weakening of the bones through loss of calcium): 2 people, 7.41%

* Approximation only. Some reports may have incomplete information.

Do you take Hydroxyzine and have Hypoxic-ischaemic encephalopathy?

- Check whether Hypoxic-ischaemic encephalopathy 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 (54,069 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 Hypoxic-ischaemic encephalopathy:

Hypoxic-ischaemic encephalopathy (373 drugs)

Browse all the conditions that are associated with Hypoxic-ischaemic encephalopathy:

Hypoxic-ischaemic encephalopathy (597 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.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.