Zyrtec and Cancer pain - a phase IV clinical study of FDA data

Summary:

Cancer pain is reported as a side effect among people who take Zyrtec (cetirizine hydrochloride), especially for people who are female, 60+ old, also take Calcium, and have Colon cancer.

The phase IV clinical study analyzes which people have Cancer pain 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 Cancer pain?

Cancer pain is found to be associated with 407 drugs and 450 conditions by eHealthMe. Check the latest studies of Cancer pain.

On Jul, 20, 2026

109,528 people reported to have side effects when taking Zyrtec.
Among them, 13 people (0.01%) have Cancer pain.

Among these 13 people:

What is the gender of people who have Cancer pain when taking Zyrtec? *

female: 83.33 %
male: 16.67 %

What is the age of people who have Cancer pain when taking Zyrtec? *

What are other drugs people take besides Zyrtec? *

Oxycodone: 4 people, 30.77%
Ondansetron: 4 people, 30.77%
Calcium: 4 people, 30.77%
Kisqali: 3 people, 23.08%
Oxycodone And Acetaminophen: 3 people, 23.08%
Celebrex: 3 people, 23.08%
Klonopin: 2 people, 15.38%
Norco: 2 people, 15.38%
Nexium: 2 people, 15.38%
Zolpidem: 2 people, 15.38%

What are other side effects people have besides Cancer pain? *

Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 6 people, 46.15%
Fatigue (feeling of tiredness): 6 people, 46.15%
Weakness: 5 people, 38.46%
Nausea (feeling of having an urge to vomit): 5 people, 38.46%
Depression: 5 people, 38.46%
Joint Pain: 5 people, 38.46%
Hypoaesthesia (reduced sense of touch or sensation): 5 people, 38.46%
Pain: 5 people, 38.46%
Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 4 people, 30.77%
Nausea And Vomiting: 4 people, 30.77%

What are the existing conditions these people have? *

Breast Cancer: 3 people, 23.08%
Colon Cancer: 3 people, 23.08%
Back Pain: 2 people, 15.38%
Breast Cancer Metastatic: 2 people, 15.38%
Bronchiectasis (abnormal widening of the bronchi or their branches, causing a risk of infection): 2 people, 15.38%
Depression: 2 people, 15.38%
Tumor Ulceration: 1 person, 7.69%
High Blood Pressure: 1 person, 7.69%
Asthma: 1 person, 7.69%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 1 person, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Zyrtec and have Cancer pain?

- Check whether Cancer pain 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 Zyrtec:

Zyrtec (114,619 reports)

Cancer pain treatments and more:

Cancer pain (18,113 reports)

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 Cancer pain:

Cancer pain (407 drugs)

Browse all the conditions that are associated with Cancer pain:

Cancer pain (450 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.