Tamiflu and Peptic ulcer aggravated - a phase IV clinical study of FDA data

Summary:

Peptic ulcer aggravated is reported as a side effect among people who take Tamiflu (oseltamivir phosphate), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Nexium, and have Gastroesophageal reflux disease.

The phase IV clinical study analyzes which people have Peptic ulcer aggravated when taking Tamiflu. It is created by eHealthMe based on reports of 21,270 people who have side effects when taking Tamiflu from the FDA, and is updated regularly.

What is Tamiflu?

Tamiflu has active ingredients of oseltamivir phosphate. It is often used in the flu. eHealthMe is studying from 22,209 Tamiflu users. Check the latest studies of Tamiflu.

What is Peptic ulcer aggravated?

Peptic ulcer aggravated is found to be associated with 1,489 drugs and 545 conditions by eHealthMe. Check the latest studies of Peptic ulcer aggravated.

On Jul, 11, 2026

21,270 people reported to have side effects when taking Tamiflu.
Among them, 76 people (0.36%) have Peptic ulcer aggravated.

Could Tamiflu cause Peptic ulcer aggravated?

Among these 76 people:

How long have people been on Tamiflu when they have Peptic ulcer aggravated? *

What is the gender of people who have Peptic ulcer aggravated when taking Tamiflu? *

female: 54.05 %
male: 45.95 %

What is the age of people who have Peptic ulcer aggravated when taking Tamiflu? *

What are other drugs people take besides Tamiflu? *

What are other side effects people have besides Peptic ulcer aggravated? *

Nausea And Vomiting: 19 people, 25.00%
Nausea (feeling of having an urge to vomit): 18 people, 23.68%
Diarrhea: 16 people, 21.05%
Hypotension (abnormally low blood pressure): 15 people, 19.74%
High Blood Pressure: 13 people, 17.11%
Dehydration (dryness resulting from the removal of water): 12 people, 15.79%
Malaise (a feeling of general discomfort or uneasiness): 12 people, 15.79%
Drug Hypersensitivity: 12 people, 15.79%
Constipation: 11 people, 14.47%
Fainting (loss of consciousness and postural tone): 11 people, 14.47%

What are the existing conditions these people have? *

Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 13 people, 17.11%
Diabetes: 11 people, 14.47%
High Blood Cholesterol: 11 people, 14.47%
High Blood Pressure: 10 people, 13.16%
Constipation: 8 people, 10.53%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 8 people, 10.53%
Stress And Anxiety: 8 people, 10.53%
Neuralgia (pain in one or more nerves): 7 people, 9.21%
Nausea (feeling of having an urge to vomit): 7 people, 9.21%
Asthma: 7 people, 9.21%

* Approximation only. Some reports may have incomplete information.

Do you take Tamiflu and have Peptic ulcer aggravated?

- Check whether Peptic ulcer aggravated 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 Tamiflu:

Tamiflu (22,209 reports)

Browse all side effects of Tamiflu:

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 Peptic ulcer aggravated:

Peptic ulcer aggravated (1,489 drugs)

Browse all the conditions that are associated with Peptic ulcer aggravated:

Peptic ulcer aggravated (545 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on oseltamivir phosphate (the active ingredients of Tamiflu) and Tamiflu (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.