Zyrtec and Conjunctivitis exacerbated - a phase IV clinical study of FDA data

Summary:

Conjunctivitis exacerbated is reported as a side effect among people who take Zyrtec (cetirizine hydrochloride), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Dupixent, and have Dermatitis atopic.

The phase IV clinical study analyzes which people have Conjunctivitis exacerbated when taking Zyrtec. It is created by eHealthMe based on reports of 109,528 people who have side effects when taking Zyrtec from the FDA, and is updated regularly.

What is Zyrtec?

Zyrtec has active ingredients of cetirizine hydrochloride. It is often used in allergies. eHealthMe is studying from 114,619 Zyrtec users. Check the latest studies of Zyrtec.

What is Conjunctivitis exacerbated?

Conjunctivitis exacerbated (bad situation of conjunctivitis) is found to be associated with 1,067 drugs and 426 conditions by eHealthMe. Check the latest studies of Conjunctivitis exacerbated.

On Jul, 11, 2026

109,528 people reported to have side effects when taking Zyrtec.
Among them, 335 people (0.31%) have Conjunctivitis exacerbated.

Could Zyrtec cause Conjunctivitis exacerbated?

Among these 335 people:

How long have people been on Zyrtec when they have Conjunctivitis exacerbated? *

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What is the gender of people who have Conjunctivitis exacerbated when taking Zyrtec? *

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What is the age of people who have Conjunctivitis exacerbated when taking Zyrtec? *

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* Approximation only. Some reports may have incomplete information.

Do you take Zyrtec and have Conjunctivitis exacerbated?

- Check whether Conjunctivitis exacerbated is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
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Related studies:

Effectiveness of, long term effects of, and alternative drugs to Zyrtec:

Zyrtec (114,619 reports)

Conjunctivitis exacerbated treatments and more:

Conjunctivitis exacerbated (5 reports)

How severe was Conjunctivitis exacerbated and when was it recovered:

Conjunctivitis exacerbated in Zyrtec

Expand to all the drugs that have ingredients of cetirizine hydrochloride:

Conjunctivitis exacerbated and drugs with ingredients of cetirizine hydrochloride

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Zyrtec:

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 Conjunctivitis exacerbated:

Conjunctivitis exacerbated (1,067 drugs)

Browse all the conditions that are associated with Conjunctivitis exacerbated:

Conjunctivitis exacerbated (426 conditions)

How the study uses the data?

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