Claritin and Heavy or prolong menstrual bleeding - a phase IV clinical study of FDA data

Summary:

Heavy or prolong menstrual bleeding is reported as a side effect among people who take Claritin (loratadine), especially for people who are 30-39 old, also take Singulair, and have Birth control.

The phase IV clinical study analyzes which people have Heavy or prolong menstrual bleeding 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 Heavy or prolong menstrual bleeding?

Heavy or prolong menstrual bleeding is found to be associated with 748 drugs and 1,264 conditions by eHealthMe. Check the latest studies of Heavy or prolong menstrual bleeding.

On Jul, 18, 2026

74,516 people reported to have side effects when taking Claritin.
Among them, 96 people (0.13%) have Heavy or prolong menstrual bleeding.

Could Claritin cause Heavy or prolong menstrual bleeding?

Among these 96 people:

What is the age of people who have Heavy or prolong menstrual bleeding when taking Claritin? *

What are other drugs people take besides Claritin? *

What are other side effects people have besides Heavy or prolong menstrual bleeding? *

Nausea (feeling of having an urge to vomit): 26 people, 27.08%
Fatigue (feeling of tiredness): 19 people, 19.79%
Dizziness: 16 people, 16.67%
Weight Decreased: 15 people, 15.62%
Weakness: 15 people, 15.62%
Dyspnea (difficult or laboured breathing): 15 people, 15.62%
Nasopharyngitis (inflammation of the nasopharynx): 15 people, 15.62%
Headache (pain in head): 14 people, 14.58%
Diarrhea: 14 people, 14.58%
Cough: 14 people, 14.58%

What are the existing conditions these people have? *

Birth Control: 16 people, 16.67%
Asthma: 12 people, 12.50%
Seasonal Allergy (allergic condition due to certain season): 9 people, 9.38%
Depression: 8 people, 8.33%
Hypersensitivity: 6 people, 6.25%
Endometriosis (appearance of endometrial tissue outside the uterus and causing pelvic pain): 5 people, 5.21%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 4 people, 4.17%
Pain: 4 people, 4.17%
Rhinitis Perennial (an inflammatory condition of the nose characterized by nasal obstruction, sneezing, itching): 4 people, 4.17%
Pulmonary Embolism (blockage of the main artery of the lung): 4 people, 4.17%

* Approximation only. Some reports may have incomplete information.

Do you take Claritin and have Heavy or prolong menstrual bleeding?

- Check whether Heavy or prolong menstrual bleeding 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)

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 Heavy or prolong menstrual bleeding:

Heavy or prolong menstrual bleeding (748 drugs)

Browse all the conditions that are associated with Heavy or prolong menstrual bleeding:

Heavy or prolong menstrual bleeding (1,264 conditions)

Related publications that referenced our studies

Coskun M, Adak I, "Excessive and frequent menstrual bleeding with methylphenidate in an adolescent girl with attention-deficit hyperactivity disorder", Journal of clinical psychopharmacology, 2017 Oct .
Coskun M, Adak I, "Excessive and frequent menstrual bleeding with methylphenidate in an adolescent girl with attention-deficit hyperactivity disorder", Journal of clinical psychopharmacology, 2017 Oct .

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.