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Generic Name: Cefdinir [SEF-dih-neer].
Names of Brands: Omnicef, Omnicef, Omni-Pac.
Class of Drugs: Third-generation cephalosporins.

What is Omnicef?

Omnicef is part of a class of drugs known as cephalosporin (SEF, an extremely low-spore antibiotic). Cefdinir is a drug that fights the bacteria that live inside the body. Omnicef can be described as an antibiotic that can be used to treat different kinds of infections caused by bacteria.

It is believed that the Omnicef brand name has been taken off the market across the U.S. If the generic versions of this product were approved by the FDA, there may be alternatives that are generic.


Don't consume Omnicef if you have an allergy to cefdinir or similar antibiotics like Ceftin, Cefzil, Keflex, and many others. Before you take Omnicef, inform your doctor if you have an allergy to any drug (especially penicillin). Also, inform your doctor if you have kidney disease or a history of intestinal issues. Utilize Omnicef for the entire duration of the prescribed period. The symptoms could have improved prior to the infection being completely gone. In addition, skipping doses could increase the risk of a subsequent infection that is not able to be treated with antibiotics. Cefdinir is not able to treat a viral infection, such as the common flu or cold. The use of antibiotics can cause diarrhea, which could be a sign of a new infection. If you are experiencing diarrhea that is bloody or watery and bloody, stop taking the medicine and consult your physician. Don't take anti-diarrhea medication unless your doctor directs you to.

Before you take this drug

To ensure that Omnicef is safe for you, inform your physician if you've ever experienced:

  • Kidney disease (or if you're taking dialysis).
  • Issues with the digestive tract, such as colitis.
  • An allergy to drugs of any kind (especially penicillins).

Omnicef liquid contains sucrose. Discuss with your doctor prior to taking this type of cefdinir if you have diabetes. Consult your healthcare if you are into breastfeeding or pregnant.

Similar/related drugs

Prednisone, amoxicillin, doxycycline, ciprofloxacin, cephalexin, metronidazole, and azithromycin

How to take Omnicef?

Consume Omnicef exactly as directed by your physician. Follow the directions on the prescription label and study all medication guides or instruction sheets.

Make sure to shake off your oral suspension (liquid) prior to taking the dosage. Utilize the dosing syringe that comes with it or a dosage-measuring device (not the kitchen spoon). It is possible to take this medication either with or without food. Take this medication for the entire prescribed duration, even if symptoms do not improve immediately. Not taking your doses regularly can increase the chance of developing an infection unresponsive to treatment. Cefdinir does not treat viral illnesses such as the flu or a typical cold. Cefdinir may influence the results of specific medical tests. Be sure to inform any doctor treating you that you're taking cefdinir. Place it in a cool, dry place free of heat and moisture. Discard any liquid medicine older than 10 days.

What happens if I miss a dose?

You should take the medication as quickly as you are able, but avoid any missed doses if it's close to the time of the next dose. Don't take two doses at a time.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line at 1-800-222-1222. Overdose symptoms may include nausea, vomiting, stomach pain, diarrhea, or a seizure.

What should be avoided?

Do not use antiacids or mineral supplements containing magnesium, aluminum, or iron within two hours before or after taking this medication. Antacids or iron may make it more difficult for your body to absorb cefdinir. This does not apply to infant formula that is enriched with iron.

The use of antibiotics can trigger diarrhea, which could be a sign of a new infection. If you are experiencing diarrhea that's watery or bloody, contact your doctor before taking the anti-diarrhea medication.

Side effects of Omnicef

Contact emergency medical attention If you notice symptoms warning of an allergy reaction (hives or breathing problems and swelling of your throat or face) or a severe reaction to your skin (fever and burning eyes, sore throat, and skin irritation, as well as an ailment that is purple or red with peeling and blisters),

See your doctor right away. If you are suffering from:

  • Extreme stomach discomfort; diarrhea that's bloody or watery (even when it happens several months after your previous dose).
  • Chills, fevers, and body aches; symptoms.
  • Pale skin, bruising that is easy, uncommon bleeding.
  • Seizure (convulsions).
  • Fever, weakness, and confusion.
  • Urine that is dark-colored, jaundice (yellowing of the eyes or skin).
  • kidney issues The result is a lack of or minimal urinary tract, swelling on your ankles or feet, fatigue, or feeling sluggish.

Common Omnicef adverse effects could include:

  • Nausea, vomiting, stomach pain, diarrhea.
  • Vaginal discharge or itching.
  • Headache.
  • Rashes (including diaper rash for infants who are using liquid cefdinir).

This isn't a complete list of all the side effects. Others could happen. Contact your doctor to seek medical advice on adverse effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.

Interaction with other drugs

Inform your doctor about any other medications you take, including:

This list isn't complete. Other medications can be affected by cefdinir. These include medications that are prescribed and available over the counter, vitamins, and herbal products. Some interactions with drugs are not listed here. are included here.