Omnicef and Head injury - a phase IV clinical study of FDA data

Summary:

Head injury is reported as a side effect among people who take Omnicef (cefdinir), especially for people who are female, 60+ old, have been taking the drug for < 1 month also take Lasix, and have Chronic lymphocytic leukaemia.

The phase IV clinical study analyzes which people have Head injury when taking Omnicef. It is created by eHealthMe based on reports of 2,586 people who have side effects when taking Omnicef from the FDA, and is updated regularly.

What is Omnicef?

Omnicef has active ingredients of cefdinir. It is often used in sinusitis. eHealthMe is studying from 2,774 Omnicef users. Check the latest studies of Omnicef.

What is Head injury?

Head injury is found to be associated with 2,621 drugs and 3,252 conditions by eHealthMe. Check the latest studies of Head injury.

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 Jul, 04, 2026

2,586 people reported to have side effects when taking Omnicef.
Among them, 31 people (1.2%) have Head injury.

Among these 31 people:

How long have people been on Omnicef when they have Head injury? *

What is the gender of people who have Head injury when taking Omnicef? *

female: 65.52 %
male: 34.48 %

What is the age of people who have Head injury when taking Omnicef? *

What are other drugs people take besides Omnicef? *

What are other side effects people have besides Head injury? *

Stress And Anxiety: 11 people, 35.48%
Cough: 10 people, 32.26%
Fatigue (feeling of tiredness): 9 people, 29.03%
Fainting (loss of consciousness and postural tone): 8 people, 25.81%
Indigestion: 8 people, 25.81%
Acute Kidney Failure: 8 people, 25.81%
Rashes (redness): 7 people, 22.58%
Nausea (feeling of having an urge to vomit): 7 people, 22.58%
Dehydration (dryness resulting from the removal of water): 7 people, 22.58%
Hypotension (abnormally low blood pressure): 7 people, 22.58%

What are the existing conditions these people have? *

Systemic-Pulmonary Artery Shunt: 3 people, 9.68%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 3 people, 9.68%
Asthma: 2 people, 6.45%
High Blood Pressure: 2 people, 6.45%
Heart Attack: 2 people, 6.45%
Coronary Heart Disease (narrowing or blockage of the coronary arteries): 2 people, 6.45%
Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 2 people, 6.45%
Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it): 2 people, 6.45%
Depression: 1 person, 3.23%
Attention Deficit Hyperactivity Disorder (a chronic condition including attention difficulty, hyperactivity, and impulsiveness): 1 person, 3.23%

* Approximation only. Some reports may have incomplete information.

Do you take Omnicef and have Head injury?

- Check whether Head injury 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 Omnicef:

Omnicef (2,774 reports)

Head injury treatments and more:

Head injury (160,560 reports)

Browse all side effects of Omnicef:

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 Head injury:

Head injury (2,621 drugs)

Browse all the conditions that are associated with Head injury:

Head injury (3,252 conditions)

How the study uses the data?

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