Claritin and Listless - a phase IV clinical study of FDA data

Summary:

Listless is reported as a side effect among people who take Claritin (loratadine), especially for people who are female, 60+ old, have been taking the drug for 1 - 6 months also take Ativan, and have Pain.

The phase IV clinical study analyzes which people have Listless when taking Claritin. It is created by eHealthMe based on reports of 74,516 people who have side effects when taking Claritin from the FDA, and is updated regularly.

What is Claritin?

Claritin has active ingredients of loratadine. It is often used in allergies. eHealthMe is studying from 77,315 Claritin users. Check the latest studies of Claritin.

What is Listless?

Listless (lack of interest, energy, or spirit) is found to be associated with 459 drugs and 653 conditions by eHealthMe. Check the latest studies of Listless.

On Jul, 21, 2026

74,516 people reported to have side effects when taking Claritin.
Among them, 19 people (0.03%) have Listless.

Among these 19 people:

How long have people been on Claritin when they have Listless? *

What is the gender of people who have Listless when taking Claritin? *

female: 73.68 %
male: 26.32 %

What is the age of people who have Listless when taking Claritin? *

What are other drugs people take besides Claritin? *

What are other side effects people have besides Listless? *

Fatigue (feeling of tiredness): 11 people, 57.89%
Headache (pain in head): 9 people, 47.37%
Diarrhea: 8 people, 42.11%
Pain In Extremity: 7 people, 36.84%
Insomnia (sleeplessness): 6 people, 31.58%
Nausea And Vomiting: 6 people, 31.58%
Nausea (feeling of having an urge to vomit): 6 people, 31.58%
Chills (felling of cold): 6 people, 31.58%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 6 people, 31.58%
Stress And Anxiety: 6 people, 31.58%

What are the existing conditions these people have? *

Pain: 6 people, 31.58%
High Blood Pressure: 3 people, 15.79%
Itching: 2 people, 10.53%
Mitral Valve Prolapse (heart's mitral valve doesn't work well): 2 people, 10.53%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 2 people, 10.53%
Fibromyalgia (a long-term condition which causes pain all over the body): 2 people, 10.53%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 10.53%
Hypersensitivity: 2 people, 10.53%
Ankylosing Spondylitis (type of arthritis affecting the spine): 2 people, 10.53%
Polycythaemia Vera (blood disorder in which the bone marrow makes too many red blood cells): 2 people, 10.53%

* Approximation only. Some reports may have incomplete information.

Do you take Claritin and have Listless?

- Check whether Listless 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 Claritin:

Claritin (77,315 reports)

Listless treatments and more:

Listless (4,524 reports)

Browse all side effects of Claritin:

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 Listless:

Listless (459 drugs)

Browse all the conditions that are associated with Listless:

Listless (653 conditions)

How the study uses the data?

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