Allegra and Multi-organ disorder - a phase IV clinical study of FDA data

Summary:

Multi-organ disorder is reported as a side effect among people who take Allegra (fexofenadine hydrochloride), especially for people who are male, 20-29 old, also take Accutane, and have Acne.

The phase IV clinical study analyzes which people have Multi-organ disorder when taking Allegra. It is created by eHealthMe based on reports of 73,095 people who have side effects when taking Allegra from the FDA, and is updated regularly.

What is Allegra?

Allegra has active ingredients of fexofenadine hydrochloride. It is often used in allergies. eHealthMe is studying from 75,497 Allegra users. Check the latest studies of Allegra.

What is Multi-organ disorder?

Multi-organ disorder (multiple organ disease) is found to be associated with 301 drugs and 513 conditions by eHealthMe. Check the latest studies of Multi-organ disorder.

On Jul, 12, 2026

73,095 people reported to have side effects when taking Allegra.
Among them, 26 people (0.04%) have Multi-organ disorder.

Could Allegra cause Multi-organ disorder?

Among these 26 people:

What is the gender of people who have Multi-organ disorder when taking Allegra? *

female: 46.15 %
male: 53.85 %

What is the age of people who have Multi-organ disorder when taking Allegra? *

What are other drugs people take besides Allegra? *

What are other side effects people have besides Multi-organ disorder? *

Irritable Bowel Syndrome: 19 people, 73.08%
Gastrointestinal Disorder (functional problems of gastrointestinal tract): 19 people, 73.08%
Inflammatory Bowel Disease: 19 people, 73.08%
Fatigue (feeling of tiredness): 13 people, 50.00%
Anaemia (lack of blood): 12 people, 46.15%
Groin Pain: 11 people, 42.31%
Headache (pain in head): 11 people, 42.31%
Crohn's Disease (a condition that causes inflammation of the gastrointestinal tract): 11 people, 42.31%
Flank Pain (a distressing sensation experienced around the lower back and the upper abdomen): 11 people, 42.31%
Intestinal Haemorrhage (bleeding from intestine): 11 people, 42.31%

What are the existing conditions these people have? *

Acne (skin problems that cause pimples): 14 people, 53.85%
Sinusitis (inflammation of sinus): 9 people, 34.62%
Gastric Ulcer (stomach ulcer): 9 people, 34.62%
Allergic Sinusitis: 9 people, 34.62%
Blood Iron Increased: 3 people, 11.54%
Arteriosclerosis Coronary Artery (thickening and hardening of arteries- coronary artery): 3 people, 11.54%
Sleep Disorder: 2 people, 7.69%
Irritable Bowel Syndrome: 2 people, 7.69%
Hypokalemia (low potassium): 2 people, 7.69%
Hypersensitivity: 2 people, 7.69%

* Approximation only. Some reports may have incomplete information.

Do you take Allegra and have Multi-organ disorder?

- Check whether Multi-organ disorder is associated with a drug or a condition
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Related studies:

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

Allegra (75,497 reports)

Browse all side effects of Allegra:

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 Multi-organ disorder:

Multi-organ disorder (301 drugs)

Browse all the conditions that are associated with Multi-organ disorder:

Multi-organ disorder (513 conditions)

How the study uses the data?

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