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Cefdinir

Cefdinir

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What is Cefdinir?

Cefdinir is a prescription cephalosporin antibiotic used to treat a variety of bacterial infections including ear infections (otitis media), sinus infections, strep throat, bronchitis, pneumonia, and certain skin infections. It works by disrupting the bacteria's ability to form a cell wall, causing them to die. Cefdinir is taken orally as a capsule or liquid suspension and is suitable for both adults and children. Typical adult doses are 300 mg twice daily or 600 mg once daily for 5–10 days. Completing the full course of antibiotics — even if you feel better — is essential to prevent the infection from returning. A licensed provider can determine if cefdinir is the right antibiotic for your infection and send a prescription directly to your pharmacy through Rx.com telehealth.

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What is Cefdinir ?

Cefdinir is a prescription cephalosporin antibiotic used to treat a variety of bacterial infections including ear infections (otitis media), sinus infections, strep throat, bronchitis, pneumonia, and certain skin infections. It works by disrupting the bacteria's ability to form a cell wall, causing them to die. Cefdinir is taken orally as a capsule or liquid suspension and is suitable for both adults and children. Typical adult doses are 300 mg twice daily or 600 mg once daily for 5–10 days. Completing the full course of antibiotics — even if you feel better — is essential to prevent the infection from returning. A licensed provider can determine if cefdinir is the right antibiotic for your infection and send a prescription directly to your pharmacy through Rx.com telehealth.
  • Sores or white patches on your lips, mouth, or throat
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Blistering, peeling, red skin rash
  • Red or black stools
  • Severe diarrhea or stomach pain
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • Tell your doctor if you are pregnant or breastfeeding, have kidney disease, or had an allergic reaction to penicillin antibiotics or any other medicines.
  • This medicine can cause diarrhea. Call your doctor if the diarrhea becomes severe, does not stop, or is bloody. Do not take any medicine to stop diarrhea until you have talked to your doctor. Diarrhea can occur 2 months or more after you stop taking this medicine.
  • If you have diabetes, use Clinistix® or Tes-Tape® for urine glucose tests while you are taking cefdinir. Cefdinir capsules and liquid may cause incorrect results on the Clinitest® urine glucose test.
  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
  • Call your doctor if your symptoms do not improve or if they get worse.
What is cefdinir used to treat?
Cefdinir is an antibiotic approved to treat bacterial infections such as ear infections (otitis media), community-acquired pneumonia, acute worsening of chronic bronchitis, maxillary sinus infections, strep throat and tonsillitis, and uncomplicated skin infections. It does not treat viral illnesses like colds or the flu.
Can you take cefdinir if you are allergic to penicillin?
Sometimes, but use caution. Cefdinir is a cephalosporin, not a penicillin, but there can be cross-reactivity in people with a penicillin allergy. Always tell your provider about any penicillin or antibiotic allergy before starting cefdinir. It should not be used at all by anyone allergic to cefdinir or other cephalosporins.
Why can't you take cefdinir with iron or antacids?
Iron supplements, iron-fortified foods, and antacids that contain magnesium or aluminum reduce how much cefdinir your body absorbs, which can make it work less well. To avoid this, separate cefdinir from these products by about 2 hours.
Does cefdinir make your stool red?
It can. When cefdinir is taken along with iron supplements or iron-fortified foods, it can turn stools a reddish color. This is a harmless effect, but if you have concerns or notice other symptoms, check with your provider.
How long does it take for cefdinir to work?
Many people start to feel better within a few days of starting cefdinir, though this varies by infection. It is important to take the full course exactly as prescribed, even if you feel better, so the infection is fully treated. If you do not improve, contact your provider.
How much does Cefdinir cost without insurance?
The price of Cefdinir without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save up to 79% off retail prices with a free Rx.com coupon.
What are the common side effects of Cefdinir?
Common side effects of Cefdinir may include: Sores or white patches on your lips, mouth, or throat, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Blistering, peeling, red skin rash, Red or black stools, Severe diarrhea or stomach pain. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Cefdinir?
Generic versions may be available for Cefdinir. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Cefdinir on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Cefdinir?
The cheapest pharmacy for Cefdinir depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Cefdinir near you.

Cefdinir Coupons & Prices

Cefdinir

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Cefdinir Capsule — prescription drug image
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Cefdinir 300mg (20)
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Compounded GLP-1 medications are not FDA-approved and are prepared by state-licensed compounding pharmacies. They are not affiliated with, endorsed by, or equivalent to any brand-name medication or manufacturer. Prescription required; eligibility is determined by a licensed provider. Prices are estimates and may vary.

Looking for a cefdinir coupon? Cefdinir is the low-cost generic version of Omnicef (the brand was discontinued in the U.S.), and because it is a generic it is usually inexpensive to fill with a discount coupon even without insurance. Cash prices still vary widely from one pharmacy to the next, so it pays to compare. Enter your ZIP above to see today's cefdinir price and print or text yourself a free discount coupon accepted at pharmacies nationwide.

What is cefdinir and how does it work?

Cefdinir is a third-generation cephalosporin antibiotic. It is FDA-approved to treat a range of bacterial infections, including acute bacterial ear infections (otitis media), community-acquired pneumonia, acute flare-ups of chronic bronchitis, acute maxillary sinus infections, strep throat and tonsillitis (pharyngitis/tonsillitis), and uncomplicated skin infections. It works by stopping bacteria from building their cell walls, which kills the bacteria causing the infection.

Cefdinir treats bacterial infections only. It does not work against viral illnesses such as the common cold or the flu. Taking any antibiotic when it is not needed can contribute to antibiotic resistance, so cefdinir should only be used when your provider prescribes it for a bacterial infection.

Cefdinir cost and coupon: what to expect without insurance

Cefdinir is available as a generic, which is the main reason it is affordable. Even so, the cash price you pay without insurance can differ a lot depending on which pharmacy you use, so comparing before you fill matters. Rx.com compares cefdinir prices across more than 60,000 pharmacies so you can find a low price near you and use a free discount coupon at the counter.

Prices change often and are shown live, so enter your ZIP above to see today's cefdinir price at pharmacies near you. There is no manufacturer savings card for generic cefdinir, but our discount coupon is free to use whether or not you have insurance.

Cefdinir alternatives and related antibiotics

Cefdinir belongs to the cephalosporin family. If your provider is considering other options, related antibiotics they may discuss include cephalexin, cefuroxime, cefixime, and cefprozil, all in the same cephalosporin class. Amoxicillin (a penicillin) and azithromycin (a macrolide) are other common antibiotics used for similar infections.

The right antibiotic depends on the specific infection, your allergy history, and other factors. This is not medical advice, and you should not switch antibiotics on your own. You can compare prices on any of these medications on Rx.com and talk with your provider about which is best for you.

Cefdinir safety and important precautions

Cefdinir has no boxed warning. It should not be used by anyone with a known allergy to cefdinir or other cephalosporins. If you have a penicillin allergy, use caution and tell your provider, because there can be cross-reactivity. Serious allergic (hypersensitivity) reactions are possible; get medical help right away for rash, hives, facial swelling, or trouble breathing. Like other antibiotics, cefdinir can cause Clostridioides difficile-associated diarrhea, which can range from mild to severe and may appear even weeks after you finish the medicine.

A few practical points: iron supplements, iron-fortified foods, and antacids containing magnesium or aluminum reduce how much cefdinir your body absorbs, so separate them by about 2 hours. Iron can also turn stools a reddish color, which is harmless. Cefdinir may make hormonal birth control less effective, the dose may need adjusting if you have kidney problems, and the oral liquid contains sucrose (worth noting if you have diabetes). This is general information, not medical advice, so follow your provider's and pharmacist's instructions.

Sources & accuracy

This Cefdinir information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Cefdinir on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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