Allegra and Gastrointestinal inflammation - a phase IV clinical study of FDA data


Gastrointestinal inflammation is found among people who take Allegra, especially for people who are male, 60+ old.

The phase IV clinical study analyzes which people take Allegra and have Gastrointestinal inflammation. It is created by eHealthMe based on reports of 62,953 people who have side effects when taking Allegra from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

With medical big data and AI algorithms, eHealthMe enables everyone to run phase IV clinical trial to detect adverse drug outcomes and monitor effectiveness. Our original studies have been referenced on 600+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Most recently, phase IV clinial trails for COVID 19 vaccines have been added, check here.

On Jun, 30, 2022

62,953 people reported to have side effects when taking Allegra.
Among them, 19 people (0.03%) have Gastrointestinal inflammation.

What is Allegra?

Allegra has active ingredients of fexofenadine hydrochloride. It is often used in allergies. eHealthMe is studying from 65,075 Allegra users for its effectiveness, alternative drugs and more.

What is Gastrointestinal inflammation?

Gastrointestinal inflammation (inflammation of stomach and intestine) is found to be associated with 759 drugs and 492 conditions by eHealthMe.

Number of Allegra and Gastrointestinal inflammation reports submitted per year:

Could Allegra cause Gastrointestinal inflammation?

Gender of people who have Gastrointestinal inflammation when taking Allegra *:

  • female: 42.11 %
  • male: 57.89 %

Age of people who have Gastrointestinal inflammation when taking Allegra *:

  • 0-1: 0.0 %
  • 2-9: 0.0 %
  • 10-19: 7.14 %
  • 20-29: 14.29 %
  • 30-39: 0.0 %
  • 40-49: 0.0 %
  • 50-59: 7.14 %
  • 60+: 71.43 %

Common drugs people take besides Allegra *:

  1. Humira: 9 people, 47.37%
  2. Vicodin: 8 people, 42.11%
  3. Coumadin: 7 people, 36.84%
  4. Prilosec: 7 people, 36.84%
  5. Zometa: 7 people, 36.84%
  6. Lyrica: 7 people, 36.84%
  7. Lipitor: 7 people, 36.84%
  8. Cymbalta: 7 people, 36.84%
  9. Tequin: 6 people, 31.58%
  10. Proscar: 6 people, 31.58%

Common side effects people have besides Gastrointestinal inflammation *:

  1. Pain: 11 people, 57.89%
  2. Stress And Anxiety: 9 people, 47.37%
  3. Intervertebral Disc Protrusion (spinal disc protrusion): 7 people, 36.84%
  4. Disability: 7 people, 36.84%
  5. High Blood Pressure: 7 people, 36.84%
  6. Sinus Disorder (disease of sinus): 7 people, 36.84%
  7. Pain In Jaw: 7 people, 36.84%
  8. Anaemia (lack of blood): 7 people, 36.84%
  9. Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 7 people, 36.84%
  10. Neuropathy Peripheral (surface nerve damage): 7 people, 36.84%

Common conditions people have *:

  1. Crohn's Disease (condition that causes inflammation of the gastrointestinal tract): 6 people, 31.58%
  2. Hypersensitivity: 6 people, 31.58%
  3. Stress And Anxiety: 3 people, 15.79%
  4. Ulcerative Colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 3 people, 15.79%
  5. Ankylosing Spondylitis (type of arthritis affecting the spine): 2 people, 10.53%
  6. Birth Control: 2 people, 10.53%
  7. Hypopituitarism (diminished hormone secretion by the pituitary gland, causing dwarfism in children and premature aging in adults): 1 person, 5.26%
  8. Breast Cancer Metastatic: 1 person, 5.26%
  9. Chronic Obstructive Pulmonary Disease (a progressive disease that makes it hard to breathe): 1 person, 5.26%
  10. Chronic Thyroiditis (long lasting inflammation of thyroid gland): 1 person, 5.26%

* Approximation only. Some reports may have incomplete information.

Do you take Allegra and have Gastrointestinal inflammation?

Check whether Gastrointestinal inflammation is associated with a drug or a condition

How 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.

Related publications that referenced our studies

Related studies

Alternative drugs to, pros and cons of Allegra:

Gastrointestinal inflammation treatments and more:

COVID vaccines that are related to Gastrointestinal inflammation:

How severe was Gastrointestinal inflammation and when was it recovered:

Expand to all the drugs that have ingredients of fexofenadine hydrochloride:

Common drugs associated with Gastrointestinal inflammation:

All the drugs that are associated with Gastrointestinal inflammation:

Common conditions associated with Gastrointestinal inflammation:

All the conditions that are associated with Gastrointestinal inflammation:

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.

Who 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 600+ 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: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on 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.

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