Allegra side effects by duration, gender and age - a phase IV clinical study of FDA data
Summary:
Side effects are reported by people who take Allegra. Common side effects include drug ineffective among females, and drug ineffective among males.
The phase IV clinical study is created by eHealthMe based on 70,114 reports from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.
Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 700+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.
70,114 people who take Allegra and have side effects are studied.
What is Allegra?
Allegra has active ingredients of fexofenadine hydrochloride. It is used in allergies. Currently, eHealthMe is studying from 72,432 Allegra users.
Number of Allegra reports submitted per year:

Allegra side effects by time on the drug *:
Allegra side effects by gender *:
Allegra side effects by age *:
* Approximation only. Some reports may have incomplete information.
Do you take Allegra?
Personalize this study to your gender and ageHow to use the study?
You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.
How the study uses the data?
The study 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.
Related studies
Alternative drugs to, pros and cons of Allegra:
- Allegra (72,432 reports)
Common Allegra side effects:
- Drug ineffective: 9,733 reports
- Fatigue (feeling of tiredness): 4,163 reports
- Headache (pain in head): 3,751 reports
- Breathing difficulty: 3,525 reports
- Dizziness: 3,238 reports
- Rashes (redness): 2,992 reports
All Allegra side effects from A to Z:
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 zWho is eHealthMe?
With medical big data and proven AI 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 700+ 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
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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.
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