Omnicef (Cefdinir)

Omnicef
4.97 ratingsReviews
Generic:
Cefdinir
Indications:
infections
Analogs:
Amoxicillin Cefuroxime Cefpodoxime Cephalexin Azithromycin Clarithromycin Ceftin Vantin Suprax Cefzil Keflex Duricef Amoxil Augmentin Zithromax Biaxin
In stock: 18 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Omnicef 300 mg

Quantity Price per tablet You save Total price
30 A$9.07 - A$272.08
60 A$7.42 A$98.80 A$445.36
90 A$6.86 A$199.12 A$617.12
120 A$6.60 A$296.40 A$791.92
180 A$6.31 A$497.04 A$1,135.44

Manufacturers

AbbVie Inc.Ranbaxy Laboratories Ltd.Torrent Pharmaceuticals Limited

Payment & Delivery

Package Example

Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.

Sized like a regular personal letter (approximately 24x11x0.7 cm), with no indication of what is inside.

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Delivery Times
Delivery MethodEstimated delivery
Express Free for orders over A$456.00Estimated delivery to Australia: 4-7 days
Standard Free for orders over A$304.00Estimated delivery to Australia: 14-21 days
EMSAustralia Post
Payment Methods
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Discount Coupons

  • Australia Day - 26 January 2026 10% AUSDAY10
  • Labour Day - 2 March 2026 6% LABOUR6
  • ANZAC Day - 25 April 2026 8% ANZAC8
  • King's Birthday - 8 June 2026 7% KING7
  • Boxing Day - 26 December 2026 12% BOXING12

FAQ

Take cefdinir 300 mg capsules for the duration prescribed for the bacterial infection, even if symptoms improve earlier, unless the prescriber tells you to change the plan. Do not save capsules for a later illness or share them with anyone else. If symptoms worsen, fail to improve, or troublesome side effects occur, seek clinical advice rather than changing or extending the course yourself.

The exact manufacturer is not confirmed in advance for this product. Check the manufacturer name on the received package label before use; manufacturer, capsule appearance and inactive ingredients can differ between supplies.

A change in appearance alone does not necessarily mean the capsules are wrong, as different manufacturers may use different colours, shapes or markings. Compare the active ingredient, 300 mg strength, capsule form, manufacturer, package label, lot number, expiry date and any imprint. Do not take the capsules until the discrepancy is checked if the ingredient, strength, form, imprint, seal or condition appears incorrect or compromised.

During pregnancy, cefdinir should be used only when clearly needed after a prescriber has weighed the expected benefit against the limited human pregnancy data. During breastfeeding, cefdinir is generally considered compatible; it was not detected in breast milk after a single 600 mg dose in available product information. Monitor the infant for unusual diarrhoea, rash or thrush if treatment is needed.

Description

Note: Images in the description are provided for informational purposes and may differ from the actual appearance of the product. Please refer to the product name, strength, active ingredients, and dosage form.

Cefdinir (brand: Omnicef) is a third-generation oral cephalosporin antibiotic available as capsules and an oral suspension. It is used to treat some mild to moderate bacterial infections caused by susceptible organisms. Use cefdinir only as prescribed. Antibiotics do not treat viral infections such as colds or flu.

Omnicef (Cefdinir) 300 mg

What it's used for

In U.S. labelling, cefdinir is indicated for selected infections caused by susceptible bacteria, including community-acquired pneumonia, pharyngitis/tonsillitis (strep throat), acute maxillary sinusitis, acute bacterial flare-ups of chronic bronchitis, uncomplicated skin infections, and, in children, acute bacterial otitis media (ear infections).

Ear infections

In Australian paediatric practice, cefdinir may be prescribed for acute bacterial otitis media when it is caused by susceptible strains of Haemophilus influenzae (including β-lactamase producing strains), Streptococcus pneumoniae (penicillin-susceptible strains only), and Moraxella catarrhalis (including β-lactamase producing strains).

Strep throat

For pharyngitis/tonsillitis ("strep throat"), cefdinir is indicated when the infection is caused by susceptible Streptococcus pyogenes. Cefdinir can eradicate S. pyogenes from the throat, but it has not been studied for preventing rheumatic fever after strep pharyngitis/tonsillitis. Only intramuscular penicillin has been shown to prevent rheumatic fever.

Pneumonia

For community-acquired pneumonia, cefdinir is indicated for infections due to susceptible strains of Haemophilus influenzae (including β-lactamase producing strains), Haemophilus parainfluenzae (including β-lactamase producing strains), Moraxella catarrhalis (including β-lactamase producing strains), and Streptococcus pneumoniae (penicillin-susceptible strains only).

UTI

Cefdinir is not generally approved in Australia for urinary tract infections. In some situations, a clinician may still prescribe it off-label based on local resistance patterns and urine culture and susceptibility results. Do not use cefdinir for a UTI unless your prescriber specifically recommends it.

Side effects

Common side effects reported with cefdinir include diarrhoea, nausea, headache, rash, and vaginal thrush in some women. Seek urgent medical help for signs of a severe allergic reaction, such as hives, swelling of the face, lips or tongue, or trouble breathing. In Australia, contact a clinician promptly if you have severe or persistent diarrhoea, especially if it is watery or bloody.

Comparison: cefdinir vs amoxicillin vs Augmentin

Feature Cefdinir Amoxicillin Augmentin (amoxicillin/clavulanate)
Class / route Third-generation cephalosporin; oral capsule or oral suspension Penicillin-class; oral (various forms) Penicillin-class + β-lactamase inhibitor; oral (various forms)
Ear infections (AOM) Indicated in paediatric AOM due to susceptible H. influenzae, S. pneumoniae (penicillin-susceptible strains only), M. catarrhalis Indicated for ENT infections due to susceptible β-lactamase-negative isolates Indicated for AOM caused by β-lactamase-producing H. influenzae and M. catarrhalis
Strep throat Indicated for pharyngitis/tonsillitis due to susceptible S. pyogenes; not studied for rheumatic fever prevention Commonly used for susceptible streptococcal ENT infections (product-specific labelling varies) May be used when broader cover is needed; still penicillin-class
Pneumonia Indicated for community-acquired pneumonia due to susceptible organisms Labelling includes lower respiratory tract infections due to susceptible β-lactamase-negative isolates Labelling includes LRTI due to β-lactamase-producing H. influenzae and M. catarrhalis
Penicillin allergy In Australia, cross-reactivity between penicillins and third-generation cephalosporins is generally low, but people with a history of immediate or severe reactions, such as anaphylaxis, should discuss their options carefully with a clinician. A true penicillin allergy is a major concern. Do not take it unless your clinician confirms it is safe for you. The same penicillin-class concern applies as with amoxicillin; do not take it unless your clinician confirms it is safe for you.
Common side effects (general) Diarrhoea, nausea, headache, rash; thrush in some women GI upset, rash (varies by product and patient) GI upset, often with more diarrhoea, and rash (varies by product and patient)

Storage

Capsules and dry powder should be stored at 25°C (77°F); excursions are permitted to 15-30°C (59-86°F). After mixing, the oral suspension should be stored at controlled room temperature, 20-25°C (68-77°F). Shake well before each dose and discard any unused suspension after 10 days. Refrigeration is not required; avoid freezing.

Cefdinir (Omnicef) is an oral antibiotic used for certain respiratory infections, including community-acquired pneumonia, strep throat caused by susceptible bacteria, and, in children, some ear infections. It is not generally approved in Australia for UTIs, and the choice of antibiotic depends on the site of infection, susceptibility results, and your allergy history.

Medically reviewed by
Brian Holtry
MD, infectious diseases specialist and medical writer
Updated 11 August 2026

Customer questions

Asked by Sophie, Melbourne, Australia

I'm in Melbourne and want to order cefdinir capsules. Can I enter my postcode before paying to see whether delivery is available to my address?

Answered by Support team

Yes. Enter your Melbourne postcode at checkout to check whether delivery is available for your address before completing payment. Availability can vary by destination.

Asked by Lachlan, Alice Springs, Australia

I live in Alice Springs rather than a capital city. How can I find out whether you can deliver cefdinir 300 mg capsules to my area?

Answered by Support team

Please enter your Alice Springs delivery details at checkout to see whether the product can be delivered to your address. This is the best way to confirm destination availability for a remote area.

Asked by Mia, Perth, Australia

My cefdinir parcel arrived in Perth after a very hot day. What should I check before I start the capsules?

Answered by Support team

Check that the package and capsules are dry, intact and within the labelled expiry date, then store them at 25°C in a tightly closed container away from excess moisture and light. Excursions between 15°C and 30°C are permitted, but the actual temperature and duration of heat exposure are unknown, so do not use capsules that appear damaged, discoloured or compromised.

Asked by Ethan, Coffs Harbour, Australia

I find antibiotics can upset my stomach. Can I take my cefdinir 300 mg capsule with breakfast, or does it need to be taken on an empty stomach?

Answered by Support team
Medical reviewed by Brian Holtry

Cefdinir capsules can be taken with or without food. Taking a dose with food may be more comfortable if it causes stomach upset; follow the prescribed dosing schedule and swallow the capsule whole with water.

Product specifications

Active ingredientCefdinir
Drug classCephalosporin antibiotic
Dosage formCapsule
Available strengths300 mg
RouteOral
StorageStore at 25°C; excursions permitted between 15°C and 30°C. Keep capsules in a tightly closed container, away from excess moisture and light.
ATC codeJ01DD15

Regulatory information

More information