Xyzal and Nasal polyps - a phase IV clinical study of FDA data

Summary:

Nasal polyps is reported as a side effect among people who take Xyzal (levocetirizine dihydrochloride), especially for people who are female, 40-49 old, have been taking the drug for < 1 month also take Singulair, and have Asthma.

The phase IV clinical study analyzes which people have Nasal polyps when taking Xyzal. It is created by eHealthMe based on reports of 20,548 people who have side effects when taking Xyzal from the FDA, and is updated regularly.

What is Xyzal?

Xyzal has active ingredients of levocetirizine dihydrochloride. It is often used in allergies. eHealthMe is studying from 21,479 Xyzal users. Check the latest studies of Xyzal.

What is Nasal polyps?

Nasal polyps (masses that develop in the lining of the nose) is found to be associated with 391 drugs and 375 conditions by eHealthMe. Check the latest studies of Nasal polyps.

On Jul, 09, 2026

20,548 people reported to have side effects when taking Xyzal.
Among them, 14 people (0.07%) have Nasal polyps.

Among these 14 people:

How long have people been on Xyzal when they have Nasal polyps? *

What is the gender of people who have Nasal polyps when taking Xyzal? *

female: 66.67 %
male: 33.33 %

What is the age of people who have Nasal polyps when taking Xyzal? *

What are other drugs people take besides Xyzal? *

What are other side effects people have besides Nasal polyps? *

Itching: 3 people, 21.43%
Pain: 3 people, 21.43%
Dyspnea (difficult or laboured breathing): 3 people, 21.43%
Sinusitis (inflammation of sinus): 3 people, 21.43%
Cough: 2 people, 14.29%
Rashes (redness): 2 people, 14.29%
Headache (pain in head): 2 people, 14.29%
Burning Sensation: 2 people, 14.29%
Pneumonia: 2 people, 14.29%
Sleep Disorder: 2 people, 14.29%

What are the existing conditions these people have? *

Asthma: 5 people, 35.71%
Allergic Rhinitis: 2 people, 14.29%
Sleep Disorder: 1 person, 7.14%
Ankylosing Spondylitis (type of arthritis affecting the spine): 1 person, 7.14%
Depression: 1 person, 7.14%
Dyslipidaemia (abnormal amount of lipids): 1 person, 7.14%
Dyspnea (difficult or laboured breathing): 1 person, 7.14%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 7.14%
High Blood Cholesterol: 1 person, 7.14%
Ulcerative Keratitis (ulcerative inflammation of the cornea): 1 person, 7.14%

* Approximation only. Some reports may have incomplete information.

Do you take Xyzal and have Nasal polyps?

- Check whether Nasal polyps 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 Xyzal:

Xyzal (21,479 reports)

Nasal polyps treatments and more:

Nasal polyps (19,447 reports)

How severe was Nasal polyps and when was it recovered:

Nasal polyps in Xyzal

Expand to all the drugs that have ingredients of levocetirizine dihydrochloride:

Nasal polyps and drugs with ingredients of levocetirizine dihydrochloride (11 reports)

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 Xyzal:

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 Nasal polyps:

Nasal polyps (391 drugs)

Browse all the conditions that are associated with Nasal polyps:

Nasal polyps (375 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on levocetirizine dihydrochloride (the active ingredients of Xyzal) and Xyzal (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.