Omnicef and Swelling - a phase IV clinical study of FDA data

Summary:

Swelling 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 Prevacid, and have Pain.

The phase IV clinical study analyzes which people have Swelling 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 Swelling?

Swelling is found to be associated with 2,295 drugs and 2,895 conditions by eHealthMe. Check the latest studies of Swelling.



On Jul, 31, 2026

2,586 people reported to have side effects when taking Omnicef.
Among them, 36 people (1.39%) have Swelling.

Could Omnicef cause Swelling?

Among these 36 people:

How long have people been on Omnicef when they have Swelling? *

  • < 1 month: 100 %
  • 1 - 6 months: 0.0 %
  • 6 - 12 months: 0.0 %
  • 1 - 2 years: 0.0 %
  • 2 - 5 years: 0.0 %
  • 5 - 10 years: 0.0 %
  • 10+ years: 0.0 %

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

  • female: 86.11 %
  • male: 13.89 %

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

  • 0-1: 2.94 %
  • 2-9: 0.0 %
  • 10-19: 2.94 %
  • 20-29: 0.0 %
  • 30-39: 5.88 %
  • 40-49: 29.41 %
  • 50-59: 26.47 %
  • 60+: 32.35 %

What are other drugs people take besides Omnicef? *

  1. Prevacid: 24 people, 66.67%
  2. Flexeril: 23 people, 63.89%
  3. Lexapro: 21 people, 58.33%
  4. Ambien: 20 people, 55.56%
  5. Ativan: 17 people, 47.22%
  6. Neurontin: 17 people, 47.22%
  7. Celebrex: 16 people, 44.44%
  8. Percocet: 16 people, 44.44%
  9. Oxycontin: 16 people, 44.44%
  10. Prilosec: 16 people, 44.44%

What are other side effects people have besides Swelling? *

  1. Dizziness: 25 people, 69.44%
  2. Fatigue (feeling of tiredness): 24 people, 66.67%
  3. Headache (pain in head): 24 people, 66.67%
  4. Cardiac Murmur (an heart sound in valve abnormality): 22 people, 61.11%
  5. Rashes (redness): 21 people, 58.33%
  6. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 19 people, 52.78%
  7. Pain: 18 people, 50.00%
  8. Depression: 17 people, 47.22%
  9. High Blood Pressure: 17 people, 47.22%
  10. Bone Pain: 17 people, 47.22%

What are the existing conditions these people have? *

  1. Pain: 16 people, 44.44%
  2. Multiple Myeloma (cancer of the plasma cells): 15 people, 41.67%
  3. Bone Lesion (bone with abnormalities. bone lesions can result from growth formations, infections, or injuries): 15 people, 41.67%
  4. Restless Leg Syndrome (a powerful urge to move your legs): 15 people, 41.67%
  5. Upper Respiratory Tract Infection: 15 people, 41.67%
  6. Muscle Spasms (muscle contraction): 15 people, 41.67%
  7. Depression: 8 people, 22.22%
  8. Hallucination, Auditory (perceiving sounds without auditory stimulus): 8 people, 22.22%
  9. Bipolar Disorder (mood disorder): 8 people, 22.22%
  10. Mesenteric Vein Thrombosis (blood clot in mesenteric vein): 3 people, 8.33%

* Approximation only. Some reports may have incomplete information.

Do you take Omnicef and have Swelling?

- Check whether Swelling 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:

Swelling treatments and more:

How severe was Swelling and when was it recovered:

Expand to all the drugs that have ingredients of cefdinir:

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

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 Swelling:

Browse all the conditions that are associated with Swelling:


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.



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