Omnicef and Allergic rhinitis - a phase IV clinical study of FDA data

Summary:

Allergic rhinitis is reported as a side effect among people who take Omnicef (cefdinir), especially for people who are male, 2-9 old, have been taking the drug for < 1 month also take Prozac, and have Eczema.

The phase IV clinical study analyzes which people have Allergic rhinitis 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 Allergic rhinitis?

Allergic rhinitis is found to be associated with 905 drugs and 1,318 conditions by eHealthMe. Check the latest studies of Allergic rhinitis.

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, 31, 2026

2,586 people reported to have side effects when taking Omnicef.
Among them, 18 people (0.7%) have Allergic rhinitis.

Among these 18 people:

How long have people been on Omnicef when they have Allergic rhinitis? *

What is the gender of people who have Allergic rhinitis when taking Omnicef? *

female: 38.89 %
male: 61.11 %

What is the age of people who have Allergic rhinitis when taking Omnicef? *

What are other drugs people take besides Omnicef? *

Prozac: 11 people, 61.11%
Zofran: 10 people, 55.56%
Azithromycin: 10 people, 55.56%
Methotrexate: 9 people, 50.00%
Triamcinolone: 9 people, 50.00%
Fluconazole: 9 people, 50.00%
Tylenol W/ Codeine No. 3: 9 people, 50.00%
Vancomycin: 9 people, 50.00%
Prednisone: 9 people, 50.00%
Ranitidine: 9 people, 50.00%

What are other side effects people have besides Allergic rhinitis? *

Stress And Anxiety: 13 people, 72.22%
Depression: 10 people, 55.56%
Upper Respiratory Tract Infection: 10 people, 55.56%
Cough: 10 people, 55.56%
Fever: 10 people, 55.56%
Conjunctivitis (pink eye): 9 people, 50.00%
Burkitt Lymphoma (cancer of the lymphatic system): 8 people, 44.44%
Lung Neoplasm (tumour of lung): 8 people, 44.44%
Viral Pharyngitis (inflammation of the throat or pharynx caused by viral infection): 8 people, 44.44%
Reflux Oesophagitis (an oesophageal mucosal injury that occurs of gastric contents into the oesophagus): 8 people, 44.44%

What are the existing conditions these people have? *

Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters): 8 people, 44.44%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 11.11%
Drowsiness: 2 people, 11.11%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 2 people, 11.11%
Asthma: 2 people, 11.11%
Otitis Media Acute (rapid inflammation of the middle ear): 1 person, 5.56%
Impaired Gastric Emptying: 1 person, 5.56%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 1 person, 5.56%
Arthritis (form of joint disorder that involves inflammation of one or more joints): 1 person, 5.56%
Acne (skin problems that cause pimples): 1 person, 5.56%

* Approximation only. Some reports may have incomplete information.

Do you take Omnicef and have Allergic rhinitis?

- Check whether Allergic rhinitis 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)

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 Allergic rhinitis:

Allergic rhinitis (905 drugs)

Browse all the conditions that are associated with Allergic rhinitis:

Allergic rhinitis (1,318 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.