Allegra and Polymyalgia rheumatica - a phase IV clinical study of FDA data

Summary:

Polymyalgia rheumatica is reported as a side effect among people who take Allegra (fexofenadine hydrochloride), especially for people who are female, 60+ old, also take Lasix, and have Bipolar disorder.

The phase IV clinical study analyzes which people have Polymyalgia rheumatica 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 75,498 Allegra users. Check the latest studies of Allegra.

What is Polymyalgia rheumatica?

Polymyalgia rheumatica (pain in many muscles) is found to be associated with 380 drugs and 554 conditions by eHealthMe. Check the latest studies of Polymyalgia rheumatica.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 31, 2026

73,095 people reported to have side effects when taking Allegra.
Among them, 12 people (0.02%) have Polymyalgia rheumatica.

Could Allegra cause Polymyalgia rheumatica?

Among these 12 people:

What is the gender of people who have Polymyalgia rheumatica when taking Allegra? *

female: 66.67 %
male: 33.33 %

What is the age of people who have Polymyalgia rheumatica when taking Allegra? *

What are other drugs people take besides Allegra? *

What are other side effects people have besides Polymyalgia rheumatica? *

Dyspnea (difficult or laboured breathing): 7 people, 58.33%
Oedema Peripheral (superficial swelling): 5 people, 41.67%
Rashes (redness): 5 people, 41.67%
Back Pain: 5 people, 41.67%
Neck Pain: 4 people, 33.33%
Pain In Extremity: 4 people, 33.33%
Dizziness: 4 people, 33.33%
Temporal Arteritis (inflammation and damage to blood vessels that supply the head area): 4 people, 33.33%
Headache (pain in head): 4 people, 33.33%
Muscle Aches (muscle pain): 4 people, 33.33%

What are the existing conditions these people have? *

Pain: 3 people, 25.00%
High Blood Cholesterol: 3 people, 25.00%
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters): 3 people, 25.00%
Bipolar Disorder (mood disorder): 3 people, 25.00%
Immunodeficiency Common Variable: 2 people, 16.67%
Oedema Peripheral (superficial swelling): 1 person, 8.33%
Inflammation: 1 person, 8.33%
Hypersensitivity: 1 person, 8.33%
High Blood Pressure: 1 person, 8.33%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Allegra and have Polymyalgia rheumatica?

- Check whether Polymyalgia rheumatica 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 Allegra:

Allegra (75,498 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 Polymyalgia rheumatica:

Polymyalgia rheumatica (380 drugs)

Browse all the conditions that are associated with Polymyalgia rheumatica:

Polymyalgia rheumatica (554 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.