Cefzil and The flu - a phase IV clinical study of FDA data

Summary:

The flu is reported as a side effect among people who take Cefzil (cefprozil), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Prilosec, and have Stress and anxiety.

The phase IV clinical study analyzes which people have The flu when taking Cefzil. It is created by eHealthMe based on reports of 1,080 people who have side effects when taking Cefzil from the FDA, and is updated regularly.

What is Cefzil?

Cefzil has active ingredients of cefprozil. It is often used in sinusitis. eHealthMe is studying from 1,106 Cefzil users. Check the latest studies of Cefzil.

What is The flu?

The flu (the flu is caused by an influenza virus) is found to be associated with 2,172 drugs and 2,718 conditions by eHealthMe. Check the latest studies of The flu.

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, 13, 2026

1,080 people reported to have side effects when taking Cefzil.
Among them, 14 people (1.3%) have The flu.

Among these 14 people:

How long have people been on Cefzil when they have The flu? *

What is the gender of people who have The flu when taking Cefzil? *

female: 100 %
male: 0.0 %

What is the age of people who have The flu when taking Cefzil? *

What are other drugs people take besides Cefzil? *

What are other side effects people have besides The flu? *

Fall: 8 people, 57.14%
Neck Pain: 8 people, 57.14%
Chest Pain: 8 people, 57.14%
Peripheral Vascular Disorder: 7 people, 50.00%
Osteoporosis (bones weak and more likely to break): 7 people, 50.00%
Osteopenia (a condition where bone mineral density is lower than normal): 7 people, 50.00%
Musculoskeletal Discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves): 7 people, 50.00%
Limb Discomfort (discomfort in leg): 7 people, 50.00%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 7 people, 50.00%
Depression: 7 people, 50.00%

What are the existing conditions these people have? *

Stress And Anxiety: 9 people, 64.29%
High Blood Cholesterol: 7 people, 50.00%
Bladder Spasm: 7 people, 50.00%
Cardiac Disorder: 7 people, 50.00%
Chest Pain: 7 people, 50.00%
Depression: 7 people, 50.00%
Peripheral Vascular Disorder: 7 people, 50.00%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 7 people, 50.00%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 7 people, 50.00%
Oesophageal Spasm (contraction of oesophagus): 7 people, 50.00%

* Approximation only. Some reports may have incomplete information.

Do you take Cefzil and have The flu?

- Check whether The flu 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 Cefzil:

Cefzil (1,106 reports)

The flu treatments and more:

The flu (145,738 reports)

Browse all side effects of Cefzil:

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 The flu:

The flu (2,172 drugs)

Browse all the conditions that are associated with The flu:

The flu (2,718 conditions)

How the study uses the data?

The study uses data from the FDA. It is based on cefprozil (the active ingredients of Cefzil) and Cefzil (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.