Zarontin and Urticaria - a phase IV clinical study of FDA data

Summary:

Urticaria is reported as a side effect among people who take Zarontin (ethosuximide), especially for people who are female, 10-19 old, have been taking the drug for < 1 month also take Augmentin, and have Convulsion.

The phase IV clinical study analyzes which people have Urticaria when taking Zarontin. It is created by eHealthMe based on reports of 958 people who have side effects when taking Zarontin from the FDA, and is updated regularly.

What is Zarontin?

Zarontin has active ingredients of ethosuximide. It is often used in petit mal seizure. eHealthMe is studying from 987 Zarontin users. Check the latest studies of Zarontin.

What is Urticaria?

Urticaria (rash of round, red welts on the skin that itch intensely) is found to be associated with 2,611 drugs and 2,956 conditions by eHealthMe. Check the latest studies of Urticaria.

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 Sep, 03, 2026

958 people reported to have side effects when taking Zarontin.
Among them, 14 people (1.46%) have Urticaria.

Among these 14 people:

How long have people been on Zarontin when they have Urticaria? *

What is the gender of people who have Urticaria when taking Zarontin? *

female: 78.57 %
male: 21.43 %

What is the age of people who have Urticaria when taking Zarontin? *

What are other drugs people take besides Zarontin? *

What are other side effects people have besides Urticaria? *

Thrombocytopenia (decrease of platelets in blood): 4 people, 28.57%
Fever: 3 people, 21.43%
Hernia (hernia happens when part of an internal organ or tissue bulges through a weak area of muscle): 2 people, 14.29%
Angioedema (rapid swelling of the dermis): 2 people, 14.29%
Bleeding Into The Skin: 2 people, 14.29%
Disseminated Intravascular Coagulation (systemic activation of blood coagulation): 2 people, 14.29%
Lactose Intolerance (inability to digest lactose): 2 people, 14.29%
Weight Increased: 2 people, 14.29%
Appetite - Increased (increased appetite is when you want to eat much more often or in larger quantities than your body requires): 1 person, 7.14%
Conjunctivitis (pink eye): 1 person, 7.14%

What are the existing conditions these people have? *

Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 2 people, 14.29%
Tonsillitis (inflammation of tonsil): 1 person, 7.14%
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 1 person, 7.14%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 1 person, 7.14%
Petit Mal Epilepsy (absence seizure): 1 person, 7.14%
Nuclear Magnetic Resonance Imaging Brain: 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Zarontin and have Urticaria?

- Check whether Urticaria 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 Zarontin:

Zarontin (987 reports)

Urticaria treatments and more:

Urticaria (173,777 reports)

Browse all side effects of Zarontin:

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 Urticaria:

Urticaria (2,611 drugs)

Browse all the conditions that are associated with Urticaria:

Urticaria (2,956 conditions)

Related publications that referenced our studies

Sharma SP, Muggia F, "Supraventricular tachycardia and urticaria complicating leuprolide-induced ovarian suppression in a young woman with breast cancer: a case report", ecancermedicalscience, 2016 Jan .
Musri FY, Mutlu H, K?vrak Salim D, Karakurt Ery?lmaz M, ?nal B, Tural D, ?enol Co?kun H, "Sorafenib-induced severe urticaria in a patient with hepatocellular cancer", Journal of Oncology Pharmacy Practice, 2016 Jan .
Semira ZA, Zulfkar Q, Sameem F, "Livedo reticularis associated with dapsone therapy in a patient with chronic urticaria", Indian journal of pharmacology, 2014 Jan .
Sharma SP, Muggia F, "Supraventricular tachycardia and urticaria complicating leuprolide-induced ovarian suppression in a young woman with breast cancer: a case report", ecancermedicalscience, 2016 Jan .
Musri FY, Mutlu H, K?vrak Salim D, Karakurt Ery?lmaz M, ?nal B, Tural D, ?enol Co?kun H, "Sorafenib-induced severe urticaria in a patient with hepatocellular cancer", Journal of Oncology Pharmacy Practice, 2016 Jan .
Semira ZA, Zulfkar Q, Sameem F, "Livedo reticularis associated with dapsone therapy in a patient with chronic urticaria", Indian journal of pharmacology, 2014 Jan .

How the study uses the data?

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